Alloy body
SPECS
SUPER BRIGHT LED: Front 40Lm / Rear 15Lm
POWER SOURCE: 220mAh Li-Polymer battery
CHARGE TIME: 2h USB
FUNCTION MODE: High / Low / Flash / Off
RUN TIME: 3h High / 6h Low / 25h Flash
SIZE: D29x35mm
WEIGHT: 29g
This size table is only an estimation, the optimum frame size depends on your personal preference and riding style