High-intensity 7-LED array – 4,800 Lux @ 6,000 FPM/30cm, Highly efficient solid-state LED light source with uniform flashing pattern allows for higher flash rates—30-300,000 FPM (flashes per minute), Digital pulse-width modulation for exceptionally sharp images at high speed, Rugged solid-state LED construction with no filaments, gases, hollow areas, or glass - (drop-resistant up to 1 meter), Precision quartz control system for maximum accuracy—0.02% (± 1 digit), Multi-line liquid crystal display, Check the rotation speed of machines without physical contact or the need for reflective tape, Advance or delay flash timing for displaying gear teeth, cutting surfaces, repeats, or "sliding" equipment, Simple push button operation with x2 and ÷2 buttons for easy adjustment