Product name: CR1620 button lithium manganese battery

Item model number: CR1620

Product material: lithium manganese

Battery voltage: 3V

Product weight: 1.3g

Product size (mm): 16*2.0 (diameter/thickness)

Expiration date: see on the outer packaging

Product features: no addition of lead, yam, mercury and other harmful substances in the production process, safe and pollution-free