Keep your Samsung smartwatch ready for fitness tracking, texting and other uses with this UltraLast smartwatch replacement battery. The precise design works with select Samsung smartwatch models for dependable operation and long-lasting use. With a simple setup, this UltraLast smartwatch replacement battery installs in minutes for minimal interruption and added convenience. Lithium-polymer battery Supplies reliable power to Samsung – Gear Live, Samsung – SM-R382 smart watches. 3.7V of power Delivers a reliable, long-lasting charge to your electronics. Rechargeable design Delivers power efficiently.