PRODUCT DESCRIPTIONS BRAND: PANASONIC CHEMISTRY: LITHIUM SIZE: 2354 VOLTAGE: 3V CAPACITY: The CR2354 battery is also a replacement for equivalent batteries: CR2354, DL2354, BR2354, KL2354, L2354, ECR2354, KCR2354, E-CR2354 All batteries are by quality branded manufacturers, normally Renata, Varta, Rayovac or Panasonic. They are not the cheap makes you get on some websites. Size: 5.4mm x 23.0mm Voltage: 3v Type:- Lithium