RECHARGEABLE - 3.7V Lithium rechargeable battery. Supplied with USB charging cable. AUTO-SENSOR - Once active, simply move your hand alongside the head torch to turn it on and off. 8W COB LED - Super bright COB LEDs create an impressive 500 lumens. WATER RESISTANT - Head torch is IP65 rated making it suitable for most outdoors use. 4 MODES - These options include: full, 30%, red and flashing red. ADJUSTABLE - Inclination of the light source can be directed as required and the elastic headband can be adjusted to fit all sizes BATTERY INDICATOR - 1200mAh battery with level indicator while charging.