Battery Tester Quartz Watch Analyzer QT2500 Battery Tester and Quartz Watch Analyzer with Implulse Tester Battery Test Most Lithium, Silver Oxide Batteries (Low and High Drain) Tests Button Cellls Found in Watches, Calculators and Small Electronics Electronic Pulse Tester for Watches Without Opening th Back Tester Size: 3 7/8" x 2 1/2