Total 180 degree visibilitythe improved rapid x2 front has increased its punch now with 140 lumen output this little light is a great addition for commuters and daytime riding featuring 180 degree visibilityultra bright strip led technologyli polymer battery technology up to 80 lumen outputcomplex circuitry for safe charge and dischargeusb recharge 2hrso ring attachment6 modes high low flashing rapid pulse vibrationruntime from 1 30 hrs depending on modedimensions w 225 x h 2