Velocity Measure Range:30.00 ~ 400.0 (m/s)
ROF Measure Range:100 ~ 6000 (RPM)
Tube Diameter:38 mm
Chrono Unit Size (L x W x H):108 x 87 x 66 mm
Chrono Unit Weight:200 g
Chrono Unit Battery:2 x AA batteries
External power:5V via micro-USB connecter
Display Unit Size (L x W x H):84.5 x 59 x 31 mm
Display Unit Battery:2 x AAA batteries
Display Unit Weight:72 g
LCD Contrast:Level 0 ~ 15
Remark 1:If use a gas or CO2 gun to measure speed, it will produce smoke, suggest for Gas or CO2 BB gun for a distance of more than 10 cm in order to avoid interference smoke.
Remark 2:When the Chrono Unit r and Display Unit are used separately, they must be kept within 5 meters.