High quality lithium button cell battery for electronic devices. Special packaging protects against unauthorized access. The battery can be used for small electronic devices. Ideal for a variety of basic and smart applications, such as car keys, remote controls, scales, medical devices, smart home system devices, and more. They have a specially designed packaging that can only be opened with scissors. Protects against unauthorized access, such as children. Technical Specifications: Type: 6620 Diameter: 16.0 mm Height: 2.0 mm Weight: 1.2 g Electrochemical System: Lithium Button Battery Voltage: 3V