Features1The intelligent sensor brake tail light has 8 light modes, suitable for various cases. 2Simulate car taillight shape, the appearance is domineering and fashionable. 3With light sensing control, the tail light will not light up in normal mode under strong light. 4Adopt IPX6 high performance waterproof grade, can be used normally in the rainstorm days, does not affect the effect. 5Install the remote control to the wired base, you can press the button to control the left and right turn signal when riding.SpecificationItem Type: Bicycle Smart Turn SignalMaterial: ABS+Electronic ComponentsWeight: Approx.261g/9.2ozTaillight Size: Approx. 116x52x35mm/4.6x2.0x1.4inWireless Remote Control Size: Approx. 42x35x16mm/1.7x1.4x0.6inControl Method: Wireless Remote ControlCharging Method: USB ChargingRemote Control Battery Capacity: 3V 200mAhRemote Control Battery: 1 x CR2032 Button Battery (built-in Battery)Taillight Battery Capacity: 3.7V 2000mahTaillight Battery: 1 x 18650 Rechargeable Battery (built-in Battery)Renewal Duration (approximately): Long Light for About 20h, Left and Right Flashes for About 5h, Middle Left and Right Flashes for About 5h, Flash for About 6.5h, Slow Flashing for About 45hThere Are 8 Light Modes: 1. Turn Left 2. Turn Right 3. Taillights Are Always on 4. Taillights Flash Quickly 5. Taillights Flash to Both Sides 6. Taillights Burst Flash 7. Taillights Flash Slowly 8. Taillights Flash Left and RightRemote Control Base: Wireless Remote Control (wired Base), Wireless Remote Control (wireless Base)Package List1 x Tail Light1 x Wired Base1 x Wireless Base1 x Rubber Ring (large)1 x Rubber Ring (small)2 x Hexagonal Screw1 x Hex Wrench1 x Usb Cable1 x Holder Bow1 xSeatpostHolder1 x Seatpost Fixing Ring1 x Wireless Remote Control