SHANREN Smart Bike Tail Light Ultra Bright Rear Bike Light USB Rechargeable Auto On-Off Waterproof LED Bicycle Lights Rear LED Cycling Light Fits to Any Road Bikes Easy to Install Seatpost Fit

Smart USB Rechargeable Super Bright Bike Tail Light What is enabled? 1. High Quality Full CNC Aluminium Alloy Chassis for much more durable lifetime, help you save a ton of money! 2. Sensitive Brake Sensing 3. Light+Motion Sensing 4. IPx6 Water Proof 5. COB LED + EnSca Lens 6. Auto Start/Stop 7. 20hrs+ run time 8. USB Charging 9. Low Battery Indication 10. 2 Operating Mode: Auto/Manual mode switch (Note: *Manual mode need to switch on/off the light manually.) 11. Automatically switch to sleep mode to save power. 12. Self-Adaptive Technology: Able to automatically correct the gravity angle to ensure the deceleration is identified while cycling on a sloping road or installing the light non-horizontally. 13. Compact and Light weight design (38g) Easy Installation Step1: Place the light on the seat rails and keep the light horizontal. Step2: Tighten the nylon cable ties and cut off the rest. Easy Operation Single Click: switch between the three flash modes Press for 1s: Turn off* Press for over 6s: Reset Note:* If operating in Auto-mode, the light will be reactivated if vibration is detected. Specifications: 3 Modes: Flash, Breathing, Sustained Distance: 150m+ Battery: 400mAh rechargeable Lithium Battery Weight: 38G (Mounting bracket included) Color: Black What comes in the box? 1*bike tail light 1*mounting bracket 1*usb cable 4*cable ties 1*user manual