The product can provide 180-degree lighting, and the warning is farther and more obvious, ensuring your riding at night and during the day. The bicycle tail light can be adjusted up and down at a large angle, so that the light forms a controllable distance line. It comes with a charging cable to charge from your computer, power bank or any device with a USB port. And the charging port is sealed with silicone, which is very waterproof and dustproof. Designed with 120 DB siren speaker for better warning when you turn left/right. Help get the attention of passersby and drivers and keep you safe while riding in traffic. Suitable for bicycles, road bikes, mountain bikes, hybrids, also can be used as helmet light, backpack light, wheelchair light, scooter light and skateboard light. Light Color:Red light, turn to yellow light Lamp Bead:32 LED(14 red light beads+18 yellow light beads) 5 Light Modes:Red Light - Flashing red light - Left turn signal - Right turn signal - All flashing Waterproof Level:IPX4 Light Size:94x32.5x26mm/3.7x1.3x1in Control Type:Remote Control Remote Size:54x42mm/2.1x1.7in Battery Capacity:900mAh lithium battery Charging Time:3 hours Discharge Time:36 hours Sound:120 Decibel Tweeter Mounting Location:Seat posts, helmets, belts, backpacks, etc. Colour:Black Material:Plastic Package Contents: 1 * Bicycle Rear Lights 1 * USB Cable 1 * Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.