RECHARGEABLE: The headlamp is built in rechargeable 1200mAh Battery. Full battery charge (4 hours) provides up to 30 hours of constant light use. USB cable is included in the package. 8 LIGHTING MODES WITH 2 COLORS: White Light provides high(400lm), middle(150lm), low(40lm) and SOS strobe lumens; Red light provides stay on and flash modes. MOTION SENSOR SWITCH: The rechargeable headlamp could be turned on/off by waving your hand under the motion sensor mode. LIGHTWEIGHT AND COMFORTABLE: Less than 2.5oz weight, adjustable ergonomically designed elastic headband, and 45 degree light angle, which make the head lamp perfect for running, camping and hiking. SATISFACTION GUARANTEED: Full refund and return in 60 DAYS with NO-QUESTIONS-ASKED and LIFETIME technical support for our headlamp flashlight.