Purchase OPTION 2: Tail BOLT USB Rechargeable Rear Red Taillight.
• LED: 1 x 3535 ultra bright LED
• Brightness: 10 lumens
• Battery: lithium-polymer rechargeable, 100 mAh
• Operation Modes & Run Time:
- High mode: 5 hours
- Slow flashing mode: 15 -20 hours
- Quick flashing & Pulse mode: 10 - 15 hours
• Weight & Size: 32 g / 35 x 35 x 30mm