Specialized Flashback Taillight Black One SizePut this little bright spot anywhereyour seatpost, your backpack, your beltand ride on. The Flashback is your go to savior, packing a mighty Im here! punch to keep you visible on the streets. The simple o ring mount takes a split second to install or remove on a round seatpost. With its belt clip, you can clip it on just about anything, and its compact size makes it a total no brainer for keeping your ride safe and your street cred high. 200mAh