Petzl IKO Core HeadlampLightweight rechargeable headlamp with multi beam and AIRFIT headband. 500 lumens The rechargeable IKO CORE headlamp combines multiple technologies to offer 500 lumens at only 79 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. The multiple LEDs are ideally distributed to provide uniform lighting, for optimal visual comfort. Thanks to