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5 CR1216 button cell batteries.
Tenergy's long lasting CR1216 lithium coin cell batteries for all your portable electronics. Ideal for for watches, mini LED lights, forehead thermometers, and other small electronics.
Tenergy CR1216 battery will fit with your device if you need any of the following battery sizes: 1216, DL1216, BR1216, KL1216, KCR1216, L1216, ECR1216, GPCR1216, LM1216, E-CR1216, KECR1216.
These 3v CR1216 batteries performs in cold temperatures as low as -4 °F and as warm as 140 °F.
Designed with anti-leak and super low self-discharge features, this 3volt lithium battery CR1216 will last 10 years when unused and properly stored.

Product description

Ideal button cell battery for thermometeres, key fob battery, and other small electronics.
CR1216 button cell batteries are also ideal size for watches