Measure the muzzle velocity / bullet speed / RPM ( round per minute ) / Joules

Foldable and Rotary LCD display makes small size

0.2g, 0.25g and 0.3g bb round weight option

Muzzle velocity until : MPS ( m/s )/ FPS ( ft/s ) select and display

Automatic shutdown time options : 5 min / 10 min / 15 min

Backlight control : 30 seconds automatically shut down constact on, turn off all the time.

Powered by 4X AAA batteries ( not included )

Tripod screw to fit camera tripod