BioLite HeadLamp 425

Color: Ember
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Experience top-tier performance with the BioLite HeadLamp 425. With 3D SlimFit Construction and a front profile of only 10 mm, it sits flush on the forehead without any worry of bounce or slippage.


  • Moisture-wicking fabric band keeps you cool and dry for any activity, and the rechargeable battery means you can leave the alkalines behind
  • Weighs only 78 g (2.8 oz.)
  • Max output is 425 lumens
  • All modes are dimmable and offer brightness mode memory
  • Rear red light with solid or strobe mode for added visibility
  • Average run time ranges from 60 hours on low to 4 hours on high
  • 1 hour reserve power mode alerts you when power is low
  • Easy one-hand tilting and updated larger power button
  • Lock mode stops light from turning on accidentally in your pack
  • Recharges via USB-C located on back of unit
  • Connect to an external power bank (not included) for extended runtimes via Pass-Thru Charging
  • Fits helmets


View the BioLite Headlamp Product LineView all BioLite LED Headlamps

Technical Specs

Best Use


Bulb Type


Bulb Detail

Light module: 1 white spot LED, 1 white flood LED, 1 red flood LED; Rear light/battery module: 2 red flood LEDs, 4 white power level indicator LEDs

Red Light Mode


Beam Type

Adjustable / Flood

Max Light Output (Lumens)

425 lumens

Light Output

High: 425 lumens; low: 5 lumens

Max Beam Distance (m)

85 meters

Beam Distance

High: 85 meters; low: 15 meters

Brightness Levels

Dimmable from high to low



Average Run Time

High: 4 hrs.; low: 60 hrs.

Regulated Output





1000 mAh Li-ion


100 x 78 x 62 millimeters

Water-Resistance Rating


Weight With Batteries

2.8 ounces


Contains recycled materials

From a Climate Neutral Certified brand

58 reviews with an average rating of 3.8 out of 5 stars

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