STROBOSCOPE RANGE: 40 TO 59000 RPM; INDICATION: DIGITAL; VOLTAGE: RECHARGEABLE NIMH BATTERY; FREQUENCY: 60 HZ; TACOMETER PRECISION: +/-0,5 R/MIN; LAMP TYPE: LED; TYPE: PORTABLE; BATTERY CAPACITY: FABRICANT STANDARD; COLOR: MANUFACTURER STANDARD; MANUFACTURER / REFERENCE SKF: TKRS 10 (DISCONTINUED) SKF: TKRS 21 SKF: TMRS 1 (DISCONTINUED) ADDITIONAL FEATURES: FLASH EMISSION RATE 40 TO 12500 F/MIN TOLERANCE PLUS OR MINUS 0.5 RPM