Feature:1. Perfect watch battery inspection tools, mainly used for measuring whether the watch button battery still have power.2. Necessary tools for watchmakers and to assist workers in maintenance, suitable for watch repairing.3. High quality plastic material with good wear resistance ability is not easy to corrode and safe to use.4. Professional watch repair accessories, give you a satisfactory experience and has exquisite workmanship.5. Suitable for watch makers and watch repairing workers to use, practical and wonderful tool.Specification:Item Type: Button Cell Battery TesterMaterial: Plastic Size: Approx. 10 x 5.3 x 2.7cm / 3.9 x 2.1 x 1.1inApplicable: for Measuring whether the watch button battery still have power.Package List:1 x Button Cell Battery Tester