Specifically sized for smaller devices, 395/399 coin or button battery is ideal for continuous use devices such as watches, small electronic toys, digital thermometers, glucometers, or heart-rate monitors. A watch cell is a small single cell battery shaped as a squat cylinder typically 9.5. mm (0.374in) in diameter and 2.7 mm (0.106in) high – resembling a button. At BatteryDivision, 395/399 batteries are available in a variety of different leading brands, and can be purchased individually or at bulk pricing.
