Equus/Innova Model IV3568 Digital Timing Light Slim, swivel barrel design Patented skip circuitry that tests up to 9,990 RPM High-intensity Xenon bulb for clear daylight viewing Protective hand guard for comfort and safety Detachable leads and inductive pickup Detailed Instructions in English, French and Spanish ASE Certified Technical support available through an 800 number and online Top-of-the line timing light for the selective do-it-yourselfer Split-screen digital LCD readout displays Tachometer and Advance functions simultaneously Digital Tach: 249 to 9,990 RPM Digital Advance: 0ﾰ to 90ﾰ (+/- 1ﾰ accuracy)