digital display design, real-time display of battery level. You would clearly know the power status anytime to minimise the inconvenience of sudden shutdown. it can fit into any pocket or bag. Use the , compact, and ultra bright bicycle taillight to safe night riding. Good for outdoor cycling and emergency back-up. Easy bicycling and hassle-free, Long to turn on/off, click to switch modes. Reopening be the mode used last time, avoid the hassle of repeatedly switching modes Normal mode defaults to simultaneously activating brake sensing. If rapid is detected, this mode automatically increase brightness to alert vehicles behind. One-touch quick release installation, no tools required. When installing, insert the base at a 45 degree angle and rotate it another 45 degrees to the left or right. Color:Black Material:plastic Package Contents: 1 * taillight 1 * seat bracket 1 * charging cable 1 * seat pole holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.