SPECIALIZEDStix Switch Headlight/Taillight Lights are designed to increase the visibility of the rider at night and even during the day. The Specialized Stix Switch can be used as a front or rear light that is perfect for riders who commute and want to be seen while they ride. With five seperate modes the Specialized Stix Switch can be used as a front light with three different lighting choices or it can be mounted as a tailight with 2 individual modes. The 340m Ah battery is USB rechargeable and requires no cables to charge up, ready to go in just two hours. Flexible mounting makes it easy to mount to any tube that is 22. 2mm to 35mm in diameter. When the battery level is low, a red and green battery charge level indicator will let you know when you need to plug in. Features Five modes steady or flash in white or red light USB rechargeable 340m Ah battery recharges via built-in USB tab in two hours Flexible mounting means you can mount these lights to any tube that is 22. 2mm to 35mm in diameter Run Time: 2 to 16 hours Specialized Part Number:49119-4000Light settings Front Modes Steady Power Flash Eco Flash Lumens6510035Run time (hours)2:006:0016:00Rear Modes Steady High Surge Glow Lumens1816Run time (hours)2:007:00Specifications Number of LEDs3Battery Type Rechargeable Weight-Water Resistant Yes Low Power Indicator Yes Mounting Type Handlebar, Seatpost, Seatstay, Seattube Battery Mounting Internal | Specialized | Stix Switch Light | Black | Headlight/tailight