The PDW USB rechargeable Io taillight has two super bright LEDs for a great value, and offers a super quick charge time of only 2.5 hours. The Io has 3 different modes, steady, flash, and pulse, and is perfect for urban riding. Features: 3 modes (runtime) Steady (10h) Flash (20h) Pulse (20h) Seatstay mount included UV proof rubber strap bracket for easy on and off included Includes Micro USB recharging cord Specs: Weight 54g Recharge Type USB