Features: 1. USB CHARGING: This bike rear light is equipped with a chargeable battery and can easily charge with the USB cable we provide, convenient to use. 2. FOUR MODES: Our cycling lamp has 4 different modes of Steady, Chasing, Flashing, Quick Chasing, can response different circumstance for riding. 3. THREE COLORS OPTION: Our bike warning light has three colors of white and red, blue, white, lightweight body and exquisite shell, a great accessory for riding. 4. HIGH QUALITY MATERIAL: This bicycle tail lamp is made of high quality material with high brightness light beads, high strength and durable. 5. GUARANTEE: If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem. Specifications: Condition: 100% Brand New Material: Plastic Weight: Approx. 34g / 1.2oz Size: Approx. 7.5 * 3 * 2cm / 3.0 * 1.2 * 0.8in Type: LED Optional Color: Red, Blue, White Power: USB Charging 4 Flash Mode: Steady, Chasing, Flashing, Quick Chasing Battery: 1100MAH Service Life: Steady Mode for 3 Hours Package list: 1 * Bicycle Tail Light 1 * USB Cable 2 * Rubber Ring Note: 1. Do not charge more than 5V 1A. 2. Don't stare at the light. 3. When the battery is insufficient, charge it in time.