The Maxell 373 SR916SW is a coin cell battery that is composed of silver oxide, which is a reliable chemistry for button batteries. Main characteristics of silver oxide batteries are their ability to handle high current demands while simultaneously having a low self-discharge and stable output voltage. For this reason, the Maxell 373 is ideal for smaller, frequently used household and medical applications, ranging from glucometers and heart-rate monitors to calculators and small electronic toys. The Maxell 373 has a shelf life of 5 years, so it will always be ready to use at a moments notice.