. The Cateye Rapid Micro Rear Light is the perfect addition to your city bike and with an output of 15 lumens, it can be used on its own or as a secondary light. The Rapid Micro rear also boasts a 30-hour runtime and a convenient charging connection via USB, so you can quickly charge up at the office or home in only 2hours Smart Power Saving. A low battery indicator keeps you in the know and an auto power save mode will help you to get home safely as your charge gets low. Mounting is simple, either clip on to your saddle bag or backpack, or strap on to your seatpost Features: Triple LED 15 lumen output Li-ion Battery USB rechargeable Constant, flashing, rapid and pulse modes Automatic flash when low on battery Battery auto save Low battery indicator Light mode memory Ideal for urban commuting or as a secondary light Includes USB charging cable and seatpost mount Runtime: 3–30 hrs depending on modeBuy Cateye Accessories from Chain Reaction Cycles, the World’s Largest Online Bike Store.