The best performance with the best value! Whether commuting in towns or riding the lanes the Volt 100/ Rapid X Rear combines 2 high power USB (Universal Serial Bus) rechargeable lights into one super safe set. Featuring: Volt 100 front with up to 150 lumen output & Rapid X rear with 25 lumens & upto 30 hours runtime. Volt 100• USB (Universal Serial Bus) rechargeable front light withup to 150 lumen output• Integrated Li-ion battery• Side visibility• USB (Universal Serial Bus) recharge• Flextight handlebar bracket• Modes: High / Low / Flash• Runtimes: 2 to 30 hrsdepending on mode• Weight: 65g Rapid X• Ultra bright strip LED technology• Li-Polymer battery technology• Complex circuitry for safe chargeand discharge• USB (Universal Serial Bus) recharge (2hrs)• O-Ring attachment• 5 modes: Constant / Flashing / Rapid / Pulse / Vibration• Runtime: C: 5hrs / F: 30hrs /R: 16hrs / P: 16hrs / V: 8hrs • Dimensions: W 22.5 x H 27.2 x L 73.2mm