BikeSpark Auto-Sensing Rear Light G2 -Super Bright LED Bike Tail Light - Auto On/Off & Deceleration Flash by Motion Sensing - USB Rechargeable - IPX5 - Made in Taiwan - J-MEX Inc., 4711404680069

• Ride Safely with Confidence - BikeSpark’s Auto-Sensing Rear Lights detect bike deceleration with an innovative deceleration sensing algorithm, Vsenx (US Patent No. 10427594 B2). Once deceleration is detected, BikeSpark increases the brightness to ultra bright for 2 seconds, alerting and improving the reaction time of the person in any vehicle traveling behind. Auto ON/OFF - Press and Hold the Control Button until the Light is On and You are Good to Go. Never have to remember to turn off your rear light again! BikeSpark turns off automatically after 1 minute of inactivity, and turns on when motion is detected. The perfect balance of convenience, battery life and riding safety. Great Brightness - Super bright SMD LEDs provide excellent visibility, up to 20 lm with low power consumption. USB Rechargeable & Li-polymer Battery - No need to keep spending your money on batteries. BKS-G2 comes with a charging cable that charges from your computer, power bank or any device with a USB 2.0 port. Please fully charge the battery before using it. 220 Degree Visibility / Easy Installation / IPX5 Water Resistance / Four Lighting Modes with Safe Flashing Features / Made in Taiwan