Generic YB17530A Bicycle Smart Seat Tube Brake 33.8x6.4x6.5cm

This 2 in 1 design bike seat post stop light is rechargeable and smart. It will light while stopping, which ensure safe riding at night.
Features:
Made of high quality aluminum alloy, strong and durable.
Built-in stop light, will not fall off, no need to worry about losing.
20 high-brightness LED lamp beads and optical lens material, high-bright and soft light.
With on-off switch, effective power saving.
Three warning light modes, more user-friendly.
IP66 water resistant grade, good waterproof effect.
2 in 1 design of seat post stop light, ensures your safe ridding at night.
Specifications:
Material: Aluminum alloy
Color: Black
Type: A/B/C (Optional)
Work Voltage: 5V
Charging Current: 270mA
Battery Capacity: 500mAh
Lighting power consumption: 0.3W LED light
Work Mode: Warning light mode, stop light mode           
Charging Time: 2-3H
Work Time: 10-20H under warning light mode
Protect Rate: IP66
Indicator Light: Charging indicator, low battery indicator
Stop Light Size: 80 x 24 x 14mm / 3.1 x 0.9 x 0.6in
Seat Post Size: 30.4 x 300mm / 1.2 x 11.8in   
Package Size: 65 x 64 x 338mm / 2.6 x 2.5 x 13.3    
Package Weight: 378g / 13.3oz    
Package List:
1 x Bike Seat Post

• Made of high quality aluminum alloy, strong and durable
• Built-in stop light, will not fall off, no need to worry about losing
• 20 high-brightness LED lamp beads and optical lens material, high-bright and soft light
• With on-off switch, effective power saving
• Three warning light modes, more user-friendly