The standard Tiny-Tach has a calculated battery life of 5 years and it is activated when it leaves Design Tech and is always "on". The display shows RPM when the engine is running and accumulated hours when shut down. The internal lithium battery has a very low draw and we have had some run 10+ years but they are the exception. Batteries are non-replaceable because the unit is potted and cannot be opened.

• Standard Model
• Used on engines with one spark firing on each revolution of the crankshaft.
• 1 cylinder 2 stroke (reads 1x / revolution) Briggs, Kohler and Honda type engines.
• 4 stroke with electronic ignition and no points.
• 2C can also be used on 2 cylinder engines where the cylinders fire 1X per revolution.
• Note 1: Engines frequently referred to as a "4 stroke" may not be a true 4-stroke because they fire on the exhaust stroke as well – requiring a 2C.
• Note 2: You cannot reset, hours will accumulate.
• Simple hour meter with tachomter.
• RPM to 9,990.
• Option available to reset the hour meter.
• Different models for different engine types.
• Updates every 2 seconds.
• Standard wire length is 6 feet.
• Estimated battery life is 5+ years — not replaceable.
• One year warranty.

One Year Warranty:

Design Technology, Inc. warrants that for a period of one year from time of purchase it will repair or replace the Tiny-Tach,™ without charge, if it fails to function properly due to a defect in workmanship or materials in the instrument.

Damage caused to the wires and cables by improper care or use is expressly excluded from this warranty. Contact us if you require assistance.