Feature: 1. Portable Design: The button cell battery tester is made of lightweight ABS material, with a mini size, making it easy to carry. A simple but effective tool to check small batteries. 2. Easy to Use: Simply place it facing down in the correct size slot, and the meter will display the battery status for you, helping you avoid overcharging and damaging the battery. A great tool for checking button cell batteries. 3. Practical Tool: The watch battery tester is a handy tool that can tell you if the battery is good, low, or needs to be replaced. A must have for those who frequently use regular or rechargeable batteries. 4. Crisp Screen Display: The user friendly analyzer shows you the information you need to know about the battery health status, accurately displaying whether the battery is in a bad, weak, or good voltage state. 5. Universal Compatibility: The tester is suitable for most 1.5v and 3v button cell batteries and indicates the battery status. It is an essential tool for watchmakers and watch repair workers. Specification: Item Type: Button Cell Battery Tester Material: ABS. Package List: 1 x Battery Tester