product manual: Solar anti-theft warning lights, Solar energy Can be absorbed and stored in high efficiency solar cell Built-in high capacity AN Ni-Mh battery, with no memory effect and long service life High quality, Imported high Brightness LED Chips If there is no sunlight for a long time, you can also use the Micro USB interface to charge No wires needed, just stick to the roof of the vehicle with the corresponding glue It can be charged by solar or you put switch on "on" or "off" Built-in light sensor, this LED light will flash in night time and will not flash during the day. (You can cover the other end by dark paper if you want it to flash during the day.) All dimensions are measured by hand, there may be slight deviations! Specifications: Material: Plastic Colour black Light Color: Blue,red Function: Can discourage burglaries into night time Package Included: 1 * Alarm LED Light Fit: For All Cars, With self-adhesive sticker, can be easily installed on the car instrument panel, door side, car grille, bumper, as warning or decorative lighting Package Included: 1 * Alarm LED Light Manufacturer: Shenzhen Huiyang Jichuang Information Network Engineering Co., Ltd Address: No. 217, Longhuan 2nd Road, Jinglong Community, Longhua Street, Longhua District, Shenzhen E-mail: 2004-szzj@163.com