Rapid x frontcob led technologyli polymer batteryupto 50 lumen output360 degree visibilityusb recharge 2 hrscomplex circuitry allows safe charge and dischargebattery auto save auto flash6 modes constant flashing rapid vibration high lowruntime 130 hrs depending on modedimensions w244 x h 308 x l742mmrapid x rearcob led technologyup to 25 lumen outputusb rechargeli ion polymer batterybattery auto save auto flash6 modes constant flashing rapid vibration high lowru