Portable Stroboscope RHEIN TACHO-"Rolux Pocket Strobe rolux-2.0", sold with case
Technical data:
 Luminous Intensity: 1200 LUX
 Frequency range: 30 ... 12,500 FPM (flashes per minute)
 Accuracy:+ / - 0.01%
 Battery life: > 2 h