10pcs 10mAh AG0 379A LR521 SR521 Alkaline Watch Button Cell Battery Description: High quality! High energy density! Long lasting! Capacity: 10mAh(at 22kO，24h\/d， 0.9v， 20+_2 degree centigrade Nominal Voltage: 1.55V Chemistry: Alkaline Replaces the following: AG0， SR63， SG0， 379， 379A， LR521， SR521. Expiration: 100% brand new-fresh from factory(at least 3 years from your purchase) AG0 Alkaline Button Batteries are commonly used in: Watches， Clocks， Calculators， Cameras， Older type hearing aids， Flashlights， Remote control， Toys， Electronic games， and many other electronic products. Battery Weight: 0.8g each Diension: 5mm x 2mm(each) Package included: 10 x AG0 Alkaline button batteries(with outer packing) Detail Pictures :