The Petzl IKO Headlamp is a bright and ultra-lightweight lighting option for your night runs. Featuring 350 lumens at max power (or 500 lumens using the CORE rechargeable battery), this LED headlamp easily lights up the whole trail ahead, and, similar to other Petzl lights, you can switch between different modes such as a flood or spot. One of the most unique designs on this light is the AIRFIT headband which keeps weight to a minimum while also resisting water or sweat. As an added benefit, this headlamp includes 3 AAA batteries which can be swapped for a CORE rechargeable battery (sold separately) for additional battery life and brightness.