Ultra Rechargeable Battery And Super Long Illumination: USB rechargeable headlamps will fully charge from any USB port in just 4-6 hours and will provide up to 4-24 hours of constant light on a single charge (USB cable included).Broader View And Motion Sensor Control: When you conduct a task ,walks or jogs at night be with two free hands, instantly improve your visibility with handspree, bright lighting.It is good choice that perfect gift for family & friends, order 2 and give one to your friendDiverse Brightness To Use: 4 LIGHTING MODES on lumens led Headlight, Intelligence/Reaction/Manual Operation/Warning Sign(S.O.S flash light),25-30cm sensing distance,and tiltable body allows you to focus light where you need it for any use.Waterproof And Comfortable: The IPX4 rating means it is protected against splashing water from all angles. Weighting Only 2.6 OUNCES With Easily Adjustable, Ergonomically Designed Elastic Headband.Wide Application And Quality Guarantee: Perfect for indoor and outdoor use, best headlamps for adults & kids- working, camping, jogging, cycling, night running, walking, fishing, hunting, hiking, reading, and various night activities.NOTE: 1. The polymer battery has a small quiescent current. If the battery is not used regularly, please charge it every three months to avoid reducing the battery life. During use, when the brightness of the LED is dim,the battery tends to be completely discharged. To protect the battery, it should be stopped and must be charged in time (It should not be used continuously and cause the battery dead, the battery is vulnerable to damage.)Product Name: Sensor Head Lamp; Material: ABS+Electronic Parts; Power: 3W; Battery Type And Capacity: lithium battery 3.7 V 1200mAh; Power Supply Mode: Rechargeable; Light Source Form: LED; The Type Of Light: White Light;Functions: Switch Button: 3W led 100% -30% -10% - flash; long press 2 seconds to enter red warning 100% light - flash; Sensor button: 3W led 100% sensor-50% sensor; Sensing Distance: 25-30cm; Time of Duration: 4-24 hours; Charge Mode: USB Cable.Switch Type: On-off Switch And Sensor Switch; Total Weight :130g / 4.6oz; Package Include: 1 x Sensor Head Lamp; 1 x Usb Cable.