ROCKBROS Cycling Taillight Bicycle Smart Auto Brake Sensing Light IPx6 Waterproof LED Charging Bike Rear Light

RockBros. Rechargeable Crystal Table Lamp: Built-in rechargeable lithium battery, it can be charged via usb cable. Bicycle Lights Front and Rear: Waterproof, can be used in rainy days, suitable for road bikes and mountain bikes. Rockbros Bike Phone Holder: Compatible with most smart phones, tablets, computers, mounts and other devices. Rockbros Official Store: 100% brand new and high quality led bicycle light. Don't worry about any damage to your bike. Rear Lights for Bicycle: Brightness and visibility make you safer when riding on the road. Brand Name: ROCKBROS. Model Number: Q2S. Mounting Placement: Seatpost. Power Supply: Battery. Material: ABS+PC. Lamp beads: COB lamp beads. Mode: 4 modes. Endurance time: 7-16h. Weight: about 22g. Water resistance: IPX6. Product detail. Material: ABS+PC. Lamp beads: COB lamp beads. Mode: 4 modes. Endurance time: 7-16h. Weight: about 22g. Water resistance: IPX6. Battery: 3.7V/260mAh polymer