Bullet points: 
[Motion Sensor Working Smartly]: W08 warning tail light works intelligently after turned on. It'll light on when it detects the motion status and light off when it detects the motion stops for 2 minutes.
 
[Clip at the Light Back]: Conveniently clip it on clothes or hats, use it when you're running, jogging, hiking, camping, etc.
 
[Light Reflectors on the Lens]: When it is powered off or out of battery, it can still reflect the lights from other vehicles to ensure safety.
 
[Daytime Warning + 6 Modes]: W08 warning tail light has 6 modes switchable, high brightness 40lumen. Unique daytime warning mode makes your cycling safer during the day.
 
[700mAh Li-battery + 85h Runtime]: Built-in 700mAh Li-battery, longest working time can be 85 hours.
 
[USB Rechargeable + Charging Indicator]: W08 warning tail light is USB rechargeable, and has charging indicator inside.
 
[IPX6 Waterproof]: IPX6 enabling normal cycling in rainy days. 
 Quick Details
Position:
rear light
Type:
leds
Power Supply:
Battery
Model Number:
W08-40A
Brightness:
40LM, 6 modes switchable
Battery:
700mAh Lithium
Material:
PC / ABS Plastic / Silicone
Visual Angle:
220°
Beam Angle:
Spotlight 25°
Waterproof:
IPX6
Charging:
5V/0.5A
Package Type:
Accessories Included:
1.User Manual
2.W08-40A bicycle rear light
3.USB Charging Cable