Bicycle Light Automatic Direction Indicator Taillight USB Charging Safety Product description:- Light: 64-LED infrared bulbs- Battery: 1200 mAh polymer battery- Charging time: 3-4 hours Package contents: 1 x combo bicycle light and turn signal Automatic direction change detection:The light automatically senses turns and changes in direction and displays a corresponding turn signal.Light senses changes in direction and speed and displays corresponding indicators - Dimensions: 58 x 71 mm- 80 Lumens waterproof bulb- USB charging- Durable construction FunctionsThe light detects changes in direction and velocity and displays corresponding safety indicators, like "left turn," "right turn," and "breaking"LED indicator patternsInfrared safety line projectorProjects a red infrared line on the road behind the cyclist to help automobiles maintain a safe following distanceLED light displayDisplay various patterns and arrows to remind the rear vehicleInfrared warning lightProvide a safe range for ridingDurable USB charging port & fastening strapThank you!