Lightweight, ergonomic headlamp with AIRFIT® headband. 350 lumens Bringing together multiple technologies! The IKO® headlamp combines multiple technologies to provide 350 lumens for a total weight of only 90 g. Featuring an AIRFIT® headband, an ultra-thin lamp body, and an energy source worn in the rear, the headlamp is balanced and comfortable enough to be imperceptible. It is versatile and can also be worn around the neck or transformed into a lantern using the storage pouch. It can fold flat to reduce bulk, making it practical for all outdoor activities. IKO® comes with three standard batteries and is also compatible with the CORE rechargeable battery, with its HYBRID CONCEPT design. Petzl IKO 350 Headlamp Black