Pure Power by Petzl - Ultra-powerful and ergonomic headlamp designed for intense activities such as treks and running. The ULTRA offers ultra-powerful, regulated lighting (350 lumens) and a wide and intense beam that will last for the entire activity. Designed for action, the ULTRA is held securely on the head. The ULTRA is extremely reliable: in all weather conditions, with long burn-times, the power level is easily verified. The ULTRA|s accessories allow the headlamp to adapt to the user|s needs. Most notably, the optional extension cord allows the battery pack to be disconnected from the headband to reduce the weight carried on the head.