Specifications: 9 LED Bike Safety taillight Features: 1. 9 Bright Red lights. Water resistant 2. Operation life up to 100,000 hours. 3. 7 Modes:1 steady, 3 kinds of flashing and 3 kinds of running light. 4. Quick release bracket, portable install to your bicycle 5. Suitable for any bicycle to give alert in bad weather 6. Long lasting: Operation with 2 x ”AAA” batteries (Batteries not included) What’s in the Package: 1xBicycle TailLight 1xBicycle Clips 1xAOKU QC Lable Installation: 1.Open the headligh by turing anti-clockwise at the front part. Place the batteries in correct polarity. 2.Install the bracket and mount the headlight onto the bracket by sliding it toward the rea until it clicks into position. 3.To remove the headlight, while pressing the unlock buttonat the rear of the bracket, pull the headlight forward.