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Black Diamond Onsight 375 - Honnold Edition

Developed after relentless testing and optimised for the living legend that is Alex Honnold and his unique adventures, the Black Diamond Onsight is a purpose-built solution for climbers seeking additional climb time after the sun has set.

The Onsight packs big performance into its ultra-thin design. Its single-button architecture and IP67 waterproof construction ensure robust, Honnold-level simplicity, while the dual-beam configuration provides the two main lighting modes most climbers need. The Climbing Mode offers 300 lumens of wide, even light that won't glare when you spot the next foothold. Route-Finder Mode cranks up the power to 375 lumens, so you can easily spot anchors or locate trails off in the distance. With Dual-Fuel compatibility, you can power the Onsight with either a BD 1800 Li-ion battery or three standard AAA batteries. Plus, a portion of each sale supports the Honnold Foundation for solar energy access. Get ready to see more and conquer the darkness.


  • Emits up to 375 lumens on max setting
  • Dual-beam configuration, providing the two main lighting modes climbers need most: Climbing Mode and Route-Finding Mode
  • Climbing Mode illuminates the holds or trail directly in front of you with 300 lumens of wide evenly dispersed light
  • Route-Finder Mode adds a powerful, narrow, long-distance beam and increases the total max output to 375 lumens
  • Dual PowerTap™ technology easily toggles between Climbing and Route-Finder Modes by touching both the right and left side of the front housing
  • Dual-Fuel: Maximum flexibility to utilize either the rechargeable Lithium Ion BD 1800 battery or Alkaline cells (Alkaline batteries included, Lithium Ion BD 1800 battery sold separately)
  • Ultra-thin front housing with extra articulation
  • Perforated elastic headband for breathability and lightweight performance
  • Six-setting 3 LED battery meter
  • Brightness Memory allows you to turn the light on and off at a chosen brightness without reverting back to full or mid-power
  • Digital lockout feature safeguards against accidental use when stored in a pack or pocket
  • IP67: Waterproof and dust proof—Unit is completely sealed and tested to operate up to 1 meter underwater for 30 minutes. Requires no maintenance after submersion.


  • Lumens: 375
  • Weight With Batteries:  135g
  • Max Distances :  [High] 85 m (alkaline), [Low] 9 m (alkaline)
  • Max Burn Time :  [High] 3 H (alkaline), [Low] 26 H (alkaline)
  • IPX Rating :  IP67
  • Batteries :  3 x AAA or BD 1800

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