$6.99 (as of 07/11/2017 05:03 PST details )
Features:
- 14 LED design provides 30 kinds of flash patterns, patterns are changed every 4 seconds, the pattern is clear and completely accessible when the bicycle speed to 20 km h
- High brightness LED, it can make you a beautiful and safe riding at night
- Fix on spokes of bike with three rotary bolts
- Detachable and movable light clip
- Equipped with light sensor and movement sensor, flash only at night and moving, it will not work and save power when it is not running