Bike tail light with turn signals can provide safety for your night ride. Easy to install and remove. Wireless remote control for convenient use, different modes with different light colors. Supports daily life water resistance, not afraid of rainy days, long service life. Rechargeable design, built in 500mAh battery, easy to charge through its USB port via power bank, laptop, power adapter, etc. High quality ABS material and bright LED beads, wear resistant, lightweight and durable.Rechargeable bike tail light with turn signals can provide you with safety for your night ride. With wireless remote control, it's easy to choose different mode to show your cycling status. It also supports daily life water resistance and quite fits for road bikes, mountain bikes and more Note:Size and color may be slightly different due to manual measurement and different lighting conditions. Thank you for understanding. Specifications: Shell Color: Black Material: ABS LED Beads: 4 pcs blue SMD/ 5 pcs red SMD/ 30 pcs yellow SMD Lumen: Red Light 10-15Lm Light Color: Red (main light color), Yellow (left/ right) Battery for Taillight: 3.7V 500mAh Polymer Lithium Battery Battery for Remote Control: 1.5V 200mAh CR2032 Taillight Size: 122 * 40mm / 4.8 * 1.6in Package Size: 16 * 13 * 4.5cm / 6.3 * 5.1 * 1.8in Package Weight: 155g / 5.5oz Package List: 1 * Bicycle Taillight 1 * Remote Control 1 * Taillight Tie-Wrap 1 * Remote Control Tie-Wrap 1 * USB Cable