ACECYCLE Smart Bike Tail Light, Brake Sensing LED Rear Light, Ultra Bright Warning, Auto On/Off Bike Light Sensor , 6 Light Mode Options , Waterproof LED Bicycle Lights,Cycling Safety Back Taillight

Specification: Item:Smart Taillight Lamp beads: COB Battery: 18650 battery *1 Capacity: 500MAH Product Size?5.3*5.2*3.8cm   Maximum Crightness:100 lumens Floodlight Angle:180 degrees housing material:A160611 Aluminum Alloy Recharge:USB Waterproof:IPX6 6 Stylish Lighting modes Use time : About 20 hours    The package include: 1 x Bicycle Rear Lamp 1 x USB cable 1 x Installation accessories   Instructions for use: Open the button for 3 seconds to turn on, is the manual mode,If you want to change the light mode, you need to manually press the button. Open the Button for 1 seconds to turn on, is automatic mode.Auto On/Off Bike Light Sensor Turn on.