Watch Test: The BWT94 Watch Test feature allows you to find out, with reasonable certainty and before actually opening an analog quartz watch, if the watch requires a battery change or watch repair.
Watch Battery Test: The BWT94 has two battery testing positions, Silver 1.55V and Lithium 3.0V. The Silver position is valid for testing both low and high drain Silver Oxide batteries, Multi-Drain watch batteries, and Alkaline button cells. The Lithium position is valid for both CR and BR Lithium 3 Volt battery systems.
The Renata Watch and Battery tester is based upon the latest technology and is powered by a consumer replaceable Renata CR2430 Lithium battery. This compact tester also features an automatic shut-off function after 2 minutes.