Landtek Instruments Stroboscope Light Digital Tester with 50 to 12000 FPM Measurement Range:50~12,000 FPM Resolution: 0.1 FPM (50~999.9 FPM) , 1 FPM (over 1000 FPM) Parameters Measured: Flashes per Minute (FPM) Flash tube type: Xenon lamp with 100 Million flash tube life