Alternative batteries that work as replacements for a CR1620 watch are the DL1620, ECR1620, BR1620 or KCR1620. The CR1620 battery code name refers to the chemical composition of the product, which is lithium and manganese dioxide, and its dimensions in terms of diameter and height.
A standard CR1620 battery has a 16-millimeter diameter and a height of 2 millimeters. A standard CR1620 battery typically has the same power capacity as both known and generic brands, allowing a consumer to save money when replacing it. A CR1620 battery has a power capacity of 75 mAh and often powers heart-rate monitors, toys and glucose monitors.