Battery size: CR2025. Type: Lithium. Expiration date: 01/2033. Other designations: CR2025, DL2025, E-CR2025, SB-T14, 280-205, ECR2025, BR2025, KCR2025, LM2025, H2327368, 6025, E2226758. Weight (of one battery): 4.8 g (0.010 lbs).
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