One 3V CR1220 Coin Battery
 
Chemistry: LITHIUM PRIM MANGANESE DIOXIDE
Voltage: 3.00
Milliamp hours: 35 mAH
Capacity: 0.04 AH
Weight: 0.01 lb
Length: 0.48 in
Width: 0.48 in
Height: 0.07 in
Termination: FLAT TOP (NO RAISED BUTTON)
Warranty: 12 MONTH FREE W/RECEIPT