Measuring range:2.5-99999RPM
Resolution: 0.1RPM at 2.5-999.9RPM/1RPM at 1000-99,999RPM
Accuracy: ±0.02%+1 digit
Measuring distance: 50-500mm
Sample time: 0.5s (above 120 RPM)
Operational temperature: 0 to 50 deg. C (32 to 122 deg. F)
Operational humidity: 10 to 90%RH
Storage temperature: -10 to 60 deg. C (14 to 140 deg. F)
Storage humidity: 10 to 75% RH
Dimensions: 145*90*35mm
Powered: via 9V battery-supplied
Weight: 120g (inc. avg. weight battery)
Packing: color box with black bag