This 3V button cell battery from UltraLast makes a great replacement battery for watches, fitness devices, glucose meters, and all kinds of other small electronics. Lithium batteries are well-suited for long-life, low-voltage applications. The UL-1616 Lithium Battery Volts: 3 mAh: 50 Chemistry: Lithium Equivalent to: 3V Duracell DL-1616B Energizer ECR-1616BP UltraLast Batteries UltraLast batteries has a wide-range of chemistries in specialty battery sizes, such as N, J, and AAAA, and coin cell (button cell), to power your keyless entry systems, watches, electric fences, cameras, pagers, laser pointers, penlights, garage door remotes, blood glucose meters, heart rate/fitness monitors, and other electronic devices. What's in the Box Ultralast UL-1616 Lithium Button Cell Battery

Ultralast UL-1616 Lithium Button Cell Battery DL1616B and ECR-1616BP Equivalent Multi-Colored: 3-volt, 50 mAh Lithium button cell battery Replaces CR1616, DL1616B, ECR1616BP, 5021LC Use with watches, fitness devices, glucose meters, and other small electronics Ideal for long-life, low-voltage applications Duracell DL-1616B and Energizer ECR-1616BP equivalent