HEADLAMP - 375 LUMEN BLACK DIAMOND ONSITE - DUAL FUEL - GRAPHITE - TAPPABLEOnsight 375 Headlamp Developed after rigorous testing while night climbing on the limestone walls of Mexico, the Onsight is our purpose built solution for climbers seeking additional climb time after the sun has set. A climbers desire for simplicity and robustness were built into every aspect of this light from the single button architecture to its fully submersible IP67 waterproof construction. Youll first notice the Onsights dual beam configuration,