This compact, battery-powered stroboscope delivers performance comparable to much larger models. It features a flash rate of up to 12,500 flashes per minute (fpm), highly accurate speed control, and drift-free operation. Use the two-stop switch for coarse flash rate adjustment and 10-turn potentiometer for fine adjustment. Low-battery indicator notifies user of battery life. A five-digit LCD indicates flash rate to 1 fpm resolution. The stroboscope accepts input from sensor for external flash triggering. Internal battery provides one hour of continuous operation, regardless of flash rate. Bright 800 lux flash intensity with life of 100 million flashes 1 year warranty