Digital Stroboscope, Includes Battery Charging Station, Resolution 0.001 fpm, Digital Display Screen Type LCD, Maximum Flashes per Minute 999, 999 fpm, Minimum Flashes per Minute 30 fpm, Maximum Flash Duration 2 usec, Power Source AC Adapter, Calibration Certificate Type Available Separately, Phase Shift No Phase Shift, External Triggers No External Triggers Included, Body Style Full Size, Battery Run Time 9.5 hr, Accuracy 0.001 Percent, Manufacturer Warranty Length 1 yr, Batteries Included No