• Compact Rear Bicycle Light
• Internal G-Sensor senses sudden hard braking and causes rapid flashing
• brake light and rear light in one 
• 7 LED's in a tiny form factor
• 350 mAh Internal USB Chargeable Battery

Incredibly tiny and efficient, the S1 Rear Light is the perfect solution for those who are looking for a rear light solution without taking precious bike real estate.  Crammed with 7 LED's, the S1 also comes equipped with an internal G-Sensor that tracks motion to increase flashing rate when it senses sudden hard braking.