LED Lenser SEO7 Rechargeable Head Torch (Blue) Advanced Focus System - Two Modes - A homogenous circle of light (defocused) // A sharply focused long distance beam (focused) Smart Light Technology - Different situations call for different lighting programs. Optimised functions help to adapt to varying situations, helping also control energy consumption. Recharge - Lithium Ion Battery included, which is rechargeable and environmentally friendly. High Comfort - Low Weight - 90 Grams (3.2 Oz) Transport Lock - Ensures the lamp doesn't accidentally turn on or off.