Coast WPH20R Waterproof Headlamp — 2000 Lumens, IP67, USB-C Rechargeable

On the output figures: lumen, candela, beam-distance and runtime numbers for portable lights are reported to the ANSI/PLATO FL 1 test method, which standardises how they are measured and stated — but they remain manufacturer self-declared, not independently certified. Listings that name no protocol are not comparable with those that do.

Coast WPH20R Waterproof Headlamp overview

The Coast WPH20R Waterproof Headlamp is the high-output, go-anywhere member of Coast's rechargeable headlamp line. It delivers up to 2000 lumens through a dual-optic system — a wide PURE BEAM flood plus a focused BULLS-EYE spot — with multiple light modes to dial in reach versus coverage. It's genuinely rugged, built to IP67 (dust-tight and submersible to 1 meter), and it charges over USB-C using Coast's RECHARGEABLE+ system. Best of all, it's three lights in one: wear it on the head strap, clip it to a hat brim or pocket, or stick it to metal with the magnetic end cap. See our best work lights guide and the work lighting collection for where it fits.

A couple of honest notes. The 2000 lumens is the maximum output — lower modes run longer, and Coast doesn't publish a 2000-lumen continuous runtime, so treat the top setting as a burst. And the mode count is listed slightly differently across sources (the current listing shows six light modes; Coast's optic literature cites five) — either way you get spot, flood, and blended options. The head strap and hat clip pair naturally with a hard hat; if you're choosing a hat, our best hard hats and hard hat for construction guides help. Comparing across the Coast line, the FLX10R is 1000 lumens (also IP67), and the XPH30R is 1500 lumens but IP54 with a twist-focus beam.

Where it fits

It's a versatile, high-output hands-free work and outdoor headlamp — construction, maintenance, automotive, utility, and field use where brightness and weatherproofing matter. The three mounting options (head, clip, magnet) mean one light covers wearing, clipping, and propping. Because the strap and clip work with a hard hat, it fits alongside head protection; for classified or hazardous-location work, though, use a certified intrinsically safe light and pair it with atmospheric monitoring from the gas-detector lineup — see the best personal gas detector guide.

Pros & cons

Specifications

Related guides

• Best work lights
• Best hard hats (2026)
• Best hard hat for construction
• Best personal gas detector

Related resources

• Coast FLX10R headlamp (1000 lm, IP67)
• Coast XPH30R headlamp (1500 lm, IP54)
• Klein hard-hat rechargeable headlamp
• Shop work lighting
• Shop head protection

Frequently asked questions

What is the maximum output?

Up to 2000 lumens on its highest setting, using Coast's dual-optic system that combines a PURE BEAM flood and a BULLS-EYE spot. The 2000-lumen figure is the maximum; lower modes trade brightness for longer runtime.

Is it waterproof?

Yes. It's built to IP67, which means it is dust-tight and protected against submersion in up to 1 meter of water — genuinely waterproof, not just splash-resistant.

How is it powered and charged?

It uses Coast's RECHARGEABLE+ system and charges over USB-C. Coast's RECHARGEABLE+ headlamps also accept disposable backup cells; confirm the exact backup battery type in the manual for this model before relying on it in the field.

How many light modes does it have?

Multiple modes for balancing reach and coverage — the current Amazon listing states six light modes, while Coast's optic literature cites five selectable optic modes. Either way you get spot, flood, and blended options plus lower settings for runtime.

Can I use it as a clip light or a task light too?

Yes. It works as a headlamp, clips to a hat brim or pocket, and has a magnetic end cap so you can stick it to a metal surface for hands-free task lighting — three tools in one.

Is the WPH20R intrinsically safe?

No. It is a general-purpose work headlamp, not intrinsically safe. Do not use it in a flammable or explosive atmosphere; classified hazardous locations require a certified intrinsically safe light.

What does the power lockout do?

It prevents the light from switching on accidentally in a bag, pocket, or toolbox, so you don't arrive at the job with a dead battery from an unintended discharge.

How does it compare to the Coast FLX10R and XPH30R?

The WPH20R is the brightest at 2000 lumens and IP67 waterproof. The FLX10R is 1000 lumens and also IP67 with AAA backup, and the XPH30R is 1500 lumens but IP54 (splash-resistant) and runs on a rechargeable pack or CR123 cells. Pick by the brightness and water rating you need.

What beam does it produce?

A dual-optic beam: a wide PURE BEAM flood for close, even coverage and a focused BULLS-EYE spot for distance, selectable through the light modes so you can match the beam to the task.

Does it fit a hard hat?

It includes a hat clip and head strap for hands-free wear; check that the clip fits your specific hard hat brim or that your hat has compatible headlamp mounting before relying on a direct fit.

What jobs is it built for?

Construction, maintenance, utility, automotive, and outdoor work where you want maximum brightness plus the flexibility to wear, clip, or magnet-mount the light. The IP67 rating suits wet and dusty conditions.

How does it charge?

Over USB-C, so you can top it up from a wall adapter, laptop, or power bank with a standard cable rather than a proprietary charger.

Reviewed by Steven Eaton, WC Safety. Specifications reflect Coast's published data and the current listing for the WPH20R; confirm the mode count, backup battery type, and pack quantity on your specific listing before purchase.