Used commonly to power wrist watches, medical equipment, calculators, gadgets and as a settings, date-time batter backup in motherboards and some other devices.

Specifications
Battery Type: Lithium Manganese Button Cell Battery
Nominal Voltage: 3 Volts
Capacity: 210mAh
Manufacturer Ref: CR2032 (Mitsubishi)
Other Manufacturers Names: Duracell: DL2032, Seiko: SB-T51
ANSI C18/NEDA designation: 5004LC
Dimensions: 20.0 × 3.2 mm (Diameter x Height)
Quantity:  1 Piece
Packaging: Blister-Carton Pack

Shipped in sealed blister packaging.