2 IN 1 Design - bike light can be used as taillight (flash or steady on) and turn signal light (left or right) at one time. With 5 Light Modes, clear LED arrows light up to indicate left turn indicator light, steady and left turn indicator light, right turn indicator light, steady and right turn indicator light, warning light, flashing light Super Bright LED Bicycle Tail Light - This light combines regular visual warning with turn signal light, providing a full round of visual warning effect. Equipped with quality LED chips and rechargeable battery, this lamp is able to meet most of visual warning needs desired in cycling Wireless Remote Control - Remote control the turn lights for bicycles to send signals in different modes by the 3 easy to use buttons on the wireless controller. Remote control on handlebar, very fixture after installation, easy for cyclist to control during riding. Suitable for Mountain, MTB and Road Bicycles Riding Security - You can use the remote to control this intelligent bike tail light with turn signal, to give backward driving vehicles light signal hints including left and right steering, parking and brake warning. Great for cycling, baby carriage, jogging, walking, road emergency and camping USB Rechargeable andamp Waterproof - Includes built-in 500mAH Capacity battery and charging cable, fully charge in 2 hours and can work for about 4-5 hours. IPX2 waterproof function can resist the rainy days and humid climate, waterproof designed for outdoor cycling. Your best partner for outdoor biking