Regold CR1220 3V Lithium Button Cell Batteries for Watch and Calculator, CCTV DVRAbout this itemAdvanced Power Performance: Utilizes CR-1220 coin battery technology for reliable and long-lasting power in various devices. Lightweight design ensures efficient energy delivery without adding unnecessary bulk.Extreme Temperature Resilience: Performs consistently in a wide temperature range from -30°C to 60°C, ensuring functionality in diverse environments. Mercury-Free Construction: Environmentally conscious design with 0% mercury content, offering safe and sustainable power while maintaining high voltage output at 3V. Versatile Compatibility: Compatible with a wide range of electronic devices including DVRs, cameras, car remote keys, motherboards, TV remotes, weighing scales, sensors, sport devices, and medical instruments. High Capacity, Low Discharge: Boasts a 37mAh high capacity and low discharge rate, providing prolonged usage without compromising performance. Effortless Installation: Easy-to-install design simplifies battery replacement for seamless integration into your devices.