The battery compatible with: Beretto Black Stealth, Beretto Chrome, Cordless Magic Clip, Designer, Senior Cordless, Sterling 4, Super Taper Cordless. | Specification:Voltage:3.7V,Capacity:3400mAh/12.58Wh,Dimension:65.70 x 20.90 x 18.65mm,Weight:117.8g | High capacity circulation function, perfect replace your original batteries. | We offer a one-month free replacement or full refund if any product problems arise | Cameron sino over 20 years battery manufacturing experience.