Other instructions: When powering on for the first time, be sure to press and hold the power button on both lights at the same time to allow pairing. Specifications: Model: H37069 Product name: Wireless magnetic trailer taillight Material: GPPS+AAS+PP+ABS+iron Casing and light color: red+yellow+white Light color: red+yellow Type: LED taillight Waterproof rating: IP65 Input voltage: 5V Operating frequency: 2.4GHz Radio communication range: 30 meters Battery capacity: 3.7V, 2000 mAh Transmitter input voltage: 12V Battery life: 100% = 10 hours, 50% = 5 hours, 25% = 2 hours Charging time: 2-2.5 hours Standby time: 20 hours Light size: 105 mm (4.13 inches) x 105 mm (4.13 inches) x 55mm (2.17 inches) 5 major functions: stop/flash/position/license plate light/reflector Quantity: 1 set, 2 lights per set Scope of application: Suitable for trailers, horse carriages, tractors, boat and jet ski trailers, bike racks, etc. Features: - No wires required! - Waterproof and powerful lighting. - Magnets behind each light for added stability. - Perfect for all trailer users, especially farmers. - Each light is equipped with the strongest magnet on the market, giving you peace of mind when driving on any terrain, without worrying about whether the tail light is still there! - No tools are required to install, just set it in the area you want the best lighting! - Switch between vehicles and machinery in seconds. The best part is that you don't need any tools to install it. (Rubber coated magnets help prevent slipping) Package Included: 2 LED Indicator Sealed Combination Lights 1 Charging Adapter 1 USB Data Cable 1 US Transmitter Instruction Manual Carrying Case Installation: 1. Find a car with a trailer socket and plug the transmitter into the socket. 2. Press the engine button and step on the brake. Turn on the white switch of the headlight at the same time, and hold the switch until the low LED light flashes 3 times. 3. Do the same for the other headlight. Note: 1. We provide clear pictures and sizes as much as possible. Please check as carefully as possible to make sure the item is what you need. 2. Please allow 0.5-1 inch error due to manual measurement. (1 inch = 2.54 cm) 3. This kit does not include instructions. If you want to know how to use or install, please contact us by email. We will try our best to help.