Led Bike Light Usb Mtb Front Light 3w Headlight Built-in Battery,b

precision aluminum alloy shell design, has the advantages of beautiful, sturdy, durable and fast heat dissipation; Waterproof design. The USB charging interface is covered with expanded rubber, and the key switch is covered with plastic. The plastic housing of the lampshade and the sealed aluminum alloy body are sealed by high-frequency welding. It can also ride in rainy days. Do not immerse in water for a long time.Intelligent sensor design: In the intelligent sensor mode, the light is on in the dark. When the outside light is sensed to reach a certain level, the lights do not turn on after a period of time, and the lights are turned on again after dark (the induction mode is not very Sensitive, when the light is sufficient, it takes a long time to sense the lights out)Adjustable thickness silicone strap design, suitable for various thickness of seat tube 18-32mm, fine forks can be used before and afterUSB interface charging (can be charged by home charger, computer or mobile power USB interface, the voltage cannot exceed 4.2V), using lithium-ion polymer battery (3.7V, 500MAH), can be recharged and discharged repeatedly, charging speed is fast, discharge time for a long time, it saves the battery and is more environmentally friendly. It usually charges for 2-4 hours, and the discharge time is about 1-2 hours. When the lamp is dark, do not turn on the lamp after the lack of power, otherwise the battery may be damaged, please charge it in time; such as the lamp If it is left unused for a long time, the self-discharge of the battery will also exhaust the power and cause over-discharge. Therefore, please keep the charging frequency once every 2 monthscolour: redMaterial: aluminum alloySize: 2.7x6cmPackage Contents:1 x Bicycle Light1 x USB data cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.