1. Brand new
2. 6 modes: Strong Red / Weak Red / Blue / Red Slow flash / Red Shun flash / Red & Blue alternating flash
3. IPX4 waterproof
4. Micro USB charging
5. Keep you safe when riding at night
6. Applicable diameter: about 6 - 8cm
2. 6 modes: Strong Red / Weak Red / Blue / Red Slow flash / Red Shun flash / Red & Blue alternating flash
3. IPX4 waterproof
4. Micro USB charging
5. Keep you safe when riding at night
6. Applicable diameter: about 6 - 8cm