Super value for high performance and long-lasting power, GP alkaline battery AAAA is designed to keep up with your energy-draining devices. Commonly used in digital pens, medical devices, remote controls, Bluetooth headsets, and more. Engineered to offer complete protection against leakage with secure sealing technology, protecting you and your devices. These batteries are developed to withstand the test of time and are guaranteed with a 3-year shelf life. Our alkaline button cell is mercury-free, reducing its impact on the environment.