The 4th generation Aurora A8 has a metal switch for better experience, it utilizes a high-performance cool white LED that delivers a max output of 650 lumens and the sidelights Amber/Red/Blue. It has a built-in 330mAh Lipo rechargeable battery and can be fully charged via the USB-C port in 1 hour. It supports a long runtime – the front LED’s moonlight mode (0.5lm) can last 72 hours and the white low mode of the sidelight  lasts 12 hours. Another improvement of the 4th generation Aurora A8 is the magnet hands-free capability, we redesigned the pocket clip and tail loop to make the clip have a magnet integrated and the loop could attach a magnetic buckle. User Interface Lock: with the light switched off, rapid click 5 times, and the front light blinks twice. Unlock: Rapid click 5 times when the light is locked, the front light blinks 3 times. Primary Light 1. Momentary on: with the light switched off, press and hold for High mode, and release to turn off 2. Constant on: rapid double click to turn on from the memorized mode*, a) then click to cycle through Moon-Low-Med-High modes, b) press for 0.5s to turn off. *Mode memory: A mode working over 3 minutes then turn off. Sidelight Amber/Red/Blue 1. Red/Blue: rapid triple click to turn on from the Red/Blue flash mode, a) Change modes: click to cycle through Red/Blue flash-Red Flash-Red Beacon b) Turn off: press for 0.5s 2. Amber: rapid quad click to turn on the Amber light, a) Change modes: click to cycle through Amber-Amber Beacon-Amber Flash b) Turn off: press for 0.5s