Another budget Chrono, courtesy of RSOV.com. Chronos are now getting cheaper these days. I wonder how they perform against the Guarder and Madbull ones, hmmmm... "All-plastic light weight chronoscope for 0.2 and 0.25g bb velocity measurement and can take MPS, FPS and J (muzzle energy). Powered by 3 x commercial 'AA' size battery and can be table standing or sit on a photographing tripod. Comes with instruction sheet in english."