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 or a Nichia 219C high CRI LED that delivers a max of 420 lumens. You can choose the sidelights from UV/Red/White - the UV wavelength is 365nm that could read banknotes, and the white color temperature is 4000K warm white; or Amber/Red/Blue (A8Y).
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 (A8U & A8UR) lasts 12 hours.
Another improvement of the 4th generation Aurora A8 is the magnet hands-free capability, we redesigned the pocket clip (RA03) and tail loop to make the clip have a magnet integrated and the loop could attach a magnetic buckle (RA30).
For more details, please check the User Manual.