WEST BIKING 5m Remote Bike Taillight LED Turn Signal MTB Bicycle Light Waterproof USB Rechargeable Cycle Rear Lamp with Alarm Sound Built-in rechargeable battery, support multiple USB quick recharging ways. Waterproof design, suitable for complex weather like rainy or snowy days. 5m remote distance, you can use remote controller to turn on lights according to road conditions and steering requirements. Built-in high decibel loudspeaker for warning, more safety for night Cycle. 6 light modes adjustable, left turn signal, right turn signal, red light keep on, red light flash, all lights flash, parking light, easy to adjust and very convenient. Quality LED light beads, 80 lumens high brightness, suitable for using in dim light environment. Compact size, light weight and portable, easy to put into pocket or car bag and carry with you. This is a quality rear lamp, with 5m remote distance, you can use remote controller to turn on lights according to road conditions and steering requirements. 6 light modes adjustable, left turn signal, right turn signal, red light keep on, red light flash, all lights flash, parking light, easy to adjust and very convenient. Built-in high decibel loudspeaker for warning, more safety for night Cycle. Specifications: Lamp size: 96 * 34 * 21.5mm / 3.78 * 1.34 * 0.85in Battery: 1 * 3.7V, 650mAh battery Item weight: 44.5g / 1.57ounce Remote controller size: 55 * 45mm / 2.17 * 1.77in Name: Rear Lamp Material: ABS (included) Package weight: 125g / 4.41ounce Package size: 150 * 120 * 32mm / 5.91 * 4.72 * 1.26in Item size: Packing List: 1 * Remote Controller 1 * Rear Lamp Waterproof design, suitable for complex weather like rainy or snowy days. Compact size, light weight and portable, easy to put into pocket or car bag and carry with you. 5m remote distance, you can use the remote controller to turn on the lights according to road conditions and steering requirements. Quality LED light beads, 80 lumens high brightness, suitable for using in dim light environment. Built-in high decibel loudspeaker for warning, more safety for night Cycle.