Archer MedTech CPR Mask for Pocket or Key Chain, One-Way Valve, Variant Review (2026)

Is the Archer MedTech CPR Mask for Pocket or Key Chain (model 8542033739) different from the other Archer MedTech listing we cover?

Published July 17, 2026 · Last updated July 27, 2026

Short answer: Yes, but only in the way two model numbers from the same product concept are different, not in features. Archer MedTech sells two separate SKUs under the same "CPR Mask for Pocket or Key Chain" name: model 8542033738 at (reviewed separately here) and this listing, model 8542033739,. Both are dual-carry, one-way-valve pocket masks sized to fit a pocket or clip to a key chain. Archer MedTech's listings do not spell out what construction or feature difference justifies the roughly price gap between the two models, and we will not invent one — we'll tell you plainly what we know and don't know so you can pick the right SKU rather than guessing.

This review covers the model 8542033739 listing specifically: what we can confirm from Archer MedTech's own listing data, how it stacks up against its lower-priced sibling model and the rest of our CPR & Rescue Supplies collection, and how to decide which of the two Archer MedTech model numbers to actually order. If you found this page looking for the cheaper Archer MedTech listing, it may be the model 8542033738 you want — see our review of that model for its side of the comparison.

This review will not teach CPR technique. A barrier mask only matters in the hands of someone trained to use it — get certified through an American Heart Association or American Red Cross course, and treat this mask as the equipment layer of that training, not a replacement for it.

Editorial verdict: 4.38/5. The Archer MedTech CPR Mask for Pocket or Key Chain, model 8542033739, is a dual-carry, one-way-valve pocket mask at — the same carry concept as Archer MedTech's other model 8542033738 listing, under a different model number. Archer MedTech's listing does not state what specifically differs between the two SKUs beyond the model number and price, and we will not fabricate a feature gap the manufacturer hasn't documented. We rate it slightly higher than its sibling on the strength of its own listing quality and clarity, while being direct with buyers that the two are, as far as public documentation shows, the same product concept at two different price points.

As an Amazon Associate, WC Safety earns from qualifying purchases. Prices and availability are subject to change.

VIEW ON WC SAFETY → CHECK PRICE ON AMAZON →

Who the Archer MedTech CPR Mask (model 8542033739) is for

• Individuals who want a real barrier mask on their own key ring or in a jacket pocket, not just staged in a kit at home
• Buyers who found this specific listing first and want to know whether to order it or Archer MedTech's other, cheaper listing before checking out
• CPR-certified professionals who move between sites and want their own carried mask rather than relying on whatever is stocked wherever they land
• Safety managers issuing a personal-carry mask to designated responders in addition to the fixed-station masks in the Workplace First Aid Kits collection
• Anyone comparing carry formats from our parent First Aid Kits parent collection before deciding between pocket, keychain, or cased options

What the Archer MedTech CPR Mask (model 8542033739) does well

Genuinely built to be carried, not just stocked

Most CPR masks we cover are designed to sit somewhere — a cabinet shelf, an AED bracket, a vehicle kit. This Archer MedTech listing is one of the few designed around the opposite assumption: that the person most likely to need it is the one already standing there, so the mask should travel with them. The "pocket or key chain" framing in the title is a genuine format decision, not just packaging language, and it's consistent across both Archer MedTech model numbers we cover.

A distinct model number for a specific SKU

Archer MedTech lists this SKU under model 8542033739, which is a different model number from the brand's other pocket-or-keychain listing (model 8542033738). That distinction matters when ordering: if you're reordering for a team or matching a previous purchase, the model number — not just the product title, which is nearly identical on both listings — is how you confirm you're ordering the same SKU again.

One-way valve barrier design

Like every mask in our CPR lineup, this Archer MedTech unit is built around a one-way valve: it is designed to let rescue breaths pass to the patient while providing a physical barrier against direct mouth-to-mouth contact and the patient's exhaled air. Carrying the mask is only half the value — the valve is the actual protective function, and it's present here in the same format buyers expect from a proper pocket mask.

Fills the same lineup gap as its sibling listing

Our hard-case masks are built for staging, and our bulk keychain shields are built for mass distribution. Neither is quite right for "one person wants one real pocket mask with a valve, on them, today." This Archer MedTech listing — like its sibling model 8542033738 — is a direct answer to that specific and common request, at a slightly higher price point.

Where the Archer MedTech CPR Mask (model 8542033739) falls short

The price difference from its sibling listing isn't explained

This is the single most important thing to understand before ordering. Model 8542033739 (this listing, and model 8542033738 (reviewed here, both describe themselves as "CPR Mask for Pocket or Key Chain, One-Way Valve" from Archer MedTech. Neither listing documents a construction, material, or feature difference that accounts for the roughly gap. We are not going to guess at a difference the manufacturer hasn't stated — if you can confirm a real distinction (case included, thicker film, different valve type) directly from Archer MedTech before ordering, do so; otherwise, treat the price gap as unexplained and choose based on which listing's stock, reviews, or shipping options work best for you at the time of purchase.

No hard case means less protection in storage

If this mask is going to sit unused in a drawer for a year rather than staying on a person's key ring, the lack of a hard case is a real disadvantage. The WNL Products hard-case mask is the better buy for anyone staging a mask at a fixed point rather than carrying it.

Not the cheapest option for bulk distribution

Buying enough of these one at a time to outfit a large group or hand out at a safety event will cost more per unit than the LSIKA-Z CPR Face Shield Keychain 100-Pack, which is built specifically for that use case.

Listing is light on patient-size detail

Archer MedTech's listing for this SKU does not spell out adult/child versus adult-only sizing the way some competing listings do. We won't claim coverage the listing doesn't state — if patient-size documentation matters for your program, verify directly against Archer MedTech's current listing before ordering.

How the Archer MedTech model 8542033739 compares across our CPR lineup

Model 8542033739 vs model 8542033738 — which Archer MedTech listing should you buy?

Both listings describe the identical concept — a one-way-valve CPR mask sized for a pocket or key chain — from the same brand. Here is the honest breakdown, since Archer MedTech's own listings don't spell out a feature difference:

• Buy this model 8542033739 if it's the listing you found first, it's available to order when the other one isn't, or you have a documented reason (confirmed directly with Archer MedTech) to prefer this SKU over the sibling model.
• Buy model 8542033738 instead if price is your deciding factor — it's the same carry concept at versus here. See our review of that model for its full breakdown.
• Buy the WNL Products hard-case mask if the mask is going to sit in a cabinet or AED bracket rather than travel with a person.
• Buy the MCR Medical 5-Pack or ASA Techmed 5-Pack if you're outfitting three to five fixed stations — see our ASA Techmed CPR Rescue Mask 5-Pack review.
• Buy the Ever Ready combo if infants are part of who you might respond to — see our Ever Ready Adult and Infant CPR Mask Combo review.

Shop the Archer MedTech pocket-or-key lineup on Amazon → This Listing (model 8542033739) Sibling Listing (model 8542033738) WNL Hard-Case Mask

Carrying the mask alongside your kits, cabinets, and vehicles

A pocket-or-keychain mask is meant to travel with a person, not sit in one place — but it still pairs well with a facility's fixed equipment. Practical combinations from our catalog:

• Personal issue plus fixed stations: issue this Archer MedTech mask to each certified responder while still staging hard-cased masks in the First Aid Cabinets & Stations collection, so coverage exists whether the responder has their own mask on them or not.
• Vehicle programs: a driver who already carries this mask on their keys still benefits from a staged mask in the vehicle first aid kit for passengers or coworkers without their own.
• Compliance kits: the First Aid Only SmartCompliance 50-Person Kit is a natural anchor for a facility's fixed CPR barrier stock, while individual staff carry their own Archer MedTech units. Our OSHA first aid kit requirements explained post covers what 29 CFR 1910.151 and ANSI Z308.1 ask of the fixed-kit side.
• Cabinets with room to spare: the Medique 712MTM 3-Shelf First Aid Cabinet and the First Aid Only 90575 3-Shelf Cabinet both have space for a backup mask even if most staff carry their own.

Top staging companions on Amazon → SmartCompliance 50-Person Kit Medique 712MTM Cabinet

Personal-carry masks vs staged masks vs bulk shields — category context

The CPR barrier category splits into three practical formats. A personal-carry mask like both Archer MedTech listings is uncased and sized to travel in a pocket or on a key ring — it exists because the responder who has trained is often the same person who should have equipment on them, not the person who happens to be standing near a cabinet. A staged mask like the WNL Products hard-case unit is meant to sit at a fixed point and survive years of storage. A bulk keychain shield like the LSIKA-Z 100-pack is built for handing dozens of units to a group at once, prioritizing cost-per-unit over individual protection. A mature program often uses all three: staged masks at fixed points, personal-carry masks on trained individuals, and bulk shields for wide distribution at events. Our which first aid kit do you need pillar guide maps that layered approach across a full first aid program, and the best workplace first aid kits guide covers the fixed-station side.

Total cost of ownership

There are no consumables tied to this mask — a sealed one-way-valve pocket mask has no refill schedule the way bandage stock does. Plan on three costs. First, the unit price, multiplied by however many people are being issued their own mask; note this runs about higher per unit than sourcing the same carry concept from Archer MedTech's other listing, so a team-wide purchase should compare both SKUs' pricing at the time of order. Second, replacement after any actual use, since single-patient barrier devices should be treated as use-once regardless of carry format. Third, periodic condition checks: because this mask has no hard case, it is more exposed to pocket lint, moisture, and general wear than a cased unit, so check it more often than you would a cabinet-stored mask — especially if your program audits kits against ANSI Z308.1 fill lists (see the OSHA and ANSI first aid kit requirements explainer).

Final verdict: 4.38/5

The Archer MedTech CPR Mask for Pocket or Key Chain, model 8542033739, is a real one-way-valve barrier mask built for personal carry — the same core concept as the brand's cheaper model 8542033738 listing, at a roughly premium the listing doesn't explain. Buy this if it's the listing that's available to order or convenient for you; buy model 8542033738 if price is the deciding factor between the two; buy the WNL Products hard-case mask when the mask needs to survive years in a cabinet instead.

VIEW ON WC SAFETY → CHECK PRICE ON AMAZON →

Archer MedTech CPR Mask (model 8542033739) FAQ

What's the difference between this listing and Archer MedTech's other CPR mask listing?

This listing is model 8542033739; the other Archer MedTech listing is model 8542033738. Both describe the identical "CPR Mask for Pocket or Key Chain, One-Way Valve" concept. Neither listing documents a specific feature difference between the two model numbers beyond the price and model number itself — we report that honestly rather than inventing a reason.

Should I buy the model or the model?

If price is your deciding factor, the model 8542033738 gets you the same documented carry concept for less. Buy this model 8542033739 if it's the one available to order, the one you found first, or if you've confirmed a specific difference directly with Archer MedTech that matters to you.

Is the Archer MedTech CPR Mask good for everyday carry?

Yes — that is exactly what both Archer MedTech listings are built for. Sized to fit a pocket or clip to a key chain, this is a genuinely carryable option in our CPR & Rescue Supplies collection.

What does the one-way valve on this mask do?

It is designed to let a rescuer's breaths pass toward the patient while acting as a physical barrier against direct contact with the patient's mouth and exhaled air. It is a hygiene and protection layer for the responder — the technique of rescue breathing itself is learned in an AHA or Red Cross certification course, not from a product page.

Does this mask come with a protective case?

No — this listing describes a pocket-or-keychain format without a hard case, the same as Archer MedTech's other listing. If storage protection matters more to you than portability, the WNL Products hard-case mask is the better fit.

Archer MedTech model 8542033739 vs WNL Products hard-case mask — which should I buy?

It depends on whether the mask travels with a person or sits in one place. Choose this Archer MedTech mask for personal carry; choose the WNL Products hard-case mask for a fixed station — see our WNL Products CPR Rescue Mask review for the staged-mask case.

Does this mask cover children as well as adults?

Archer MedTech's listing for this SKU does not specify adult/child sizing the way some competing listings do, so we will not claim it. If your program requires documented patient-size coverage, verify directly against the current listing or choose a product that states it explicitly, such as the Ever Ready Adult and Infant CPR Mask Combo Kit.

Is a pocket-or-keychain mask better than a flat keychain shield?

They serve different priorities. This Archer MedTech mask is a more substantial pocket-mask format that still carries small; a flat shield like the LSIKA-Z CPR Face Shield Keychain 100-Pack is thinner and cheaper per unit but sold in bulk for distribution rather than as a single carry item.

Can this Archer MedTech mask go inside a workplace first aid kit?

Yes — a CPR barrier device is a common add-on to a kit fill, and this mask's small size means it fits easily inside kits in our workplace first aid kits collection as well as on a person. The OSHA first aid kit requirements explainer covers how barrier devices relate to 29 CFR 1910.151 programs.

Does owning this mask mean I can perform CPR?

No. The mask is equipment, not competence. Get certified through the American Heart Association or American Red Cross — those courses teach compressions, rescue breaths, and AED use, and they are the only place to learn technique. This mask simply means a trained responder has a barrier on hand.

How often should a carried CPR mask be replaced?

Replace it after any use, and check it more frequently than a cased mask since it has no hard shell protecting it from pocket wear, lint, and moisture. Replacing it on a routine schedule is inexpensive insurance either way.

Why would two listings from the same brand and the same product name have different prices?

We don't know, and we won't guess. Archer MedTech's listings do not explain the pricing gap between model 8542033738 and model 8542033739. Differences could reflect anything from packaging, seller, fulfillment method, or simply independent pricing on two separate SKUs — none of which is stated on either listing, so we report the gap honestly rather than fabricating a rationale.

Is the model 8542033739 the only version of this mask?

No — Archer MedTech also lists model 8542033738 under the same "CPR Mask for Pocket or Key Chain" name at a lower price. We report both model numbers accurately rather than treating them as interchangeable or as a single listing.

Archer MedTech mask vs MCR Medical 5-Pack — what's the real difference?

Format and quantity: this Archer MedTech listing is a single uncased carry mask, while the MCR Medical CPR Rescue Mask 5-Pack delivers five hard-cased masks for multi-station stocking. Buy the Archer MedTech mask to carry one yourself; buy the MCR Medical 5-pack to stage several fixed points.

Does OSHA require a personal-carry CPR mask?

OSHA's 29 CFR 1910.151 requires adequate first aid supplies without mandating a personal-carry mask specifically; ANSI/ISEA Z308.1 fill classes drive most kit contents, and personal-carry barrier devices are an individual-level supplement some responders choose on top of a compliant kit. The full regulatory picture is in our OSHA first aid kit requirements explainer.

Is the Archer MedTech CPR Mask (model 8542033739) worth it at?

For anyone who wants a real barrier mask on their own person and this is the listing available to them, yes — it delivers the same documented carry concept as the brand's cheaper listing. Price-sensitive buyers should compare against model 8542033738 first, as mapped in our which first aid kit do you need guide.

Primary sources for this page

The wording behind this page sits in OSHA 29 CFR 1910.132, NIOSH Personal Protective Equipment.

Methodology: how this page is maintained

Methodology. Figures are read from the primary source and re-checked whenever the underlying standard or a manufacturer document changes. No laboratory testing is performed for this page. Where a figure is not published, the page states that rather than estimating it, because a plausible invented number is more dangerous than an absent one.