ITEM NAME:1.55V 3V Button Cell Battery Checker Battery Tester Watch Repairing Tool A#S Product Description Description: Features: When the pointer point at red district, indicate the battery is in a low power.Included: 1 X Cell Battery Checker Watch Repairing Tool. Suitable for: 1.55V 3V Cell batteries. When the pointer point at green district, indicate the battery is in a good condition, you needn't change.
