Lightweight, ergonomic rechargeable headlamp with AIRFIT® headband that brings together multiple technologies. Features: AIRFIT® headband: Innovative, streamlined design Semi rigid Water repellent to resist sweat and rain Thin, considerably reducing the area of contact and improving air circulation during dynamic activities Ultra-thin lamp body Energy source worn in the rear to distribute headlamp weight over the entire head, making it balanced and comfortable enough to be almost imperceptible Quick and easy adjustment at the rear Can also be worn around the neck Compatible with all Petzl helmets Can be transformed into a lantern using the storage pouch Can fold flat to reduce bulk, making it practical for all outdoor activities Reflective components in rear to remain visible at night Comes with the Core rechargeable battery but also works with three AAA/LR03 batteries (not included). Note: 350 lumensmax with AAA batteries Rechargeable via micro USB Battery charge indicator shows remaining battery life each time lamp is turned on or off Great visual comfort, with uniform lighting provided by multiple LEDs 2 beams: Flood Mixed 3 white lighting levels: Max 500 lumens Simple to use with one button Lock function Energy: 1250 mAh CORE rechargeable battery (included) Charging time: 3 h Battery compatibility: Alkaline, lithium, or Ni-MH rechargeable Watertightness: IPX4 (weather-resistant) Certification(s): CE, UKCA Weight: 79 g Petzl Iko Core Headlamp