Ascher Ultra Bright USB Rechargeable Bike Light Set, Powerful Bicycle Front Headlight and Back Taillight, 4 Light Modes, Easy to Install for Men Women Kids Road Mountain Cycling Black

4 Light Mode Options and Discharge Time of Full-charging. Headlight: 6.5 hrs (full brightness) ,10 hrs (half brightness), 6.5 hrs (slow flashing), 12 hrs (fast flashing). Taillight: 9.5 hrs (full brig...