Features 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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.