Specification Type:Lifepo4 Voltage:3.6V Capacity: 2040mAh Size: 65.70 x 20.90 x 18.65mm Compatible Model: Wahl Cordless Magic Clip Designer Sterling 4 Super Taper Cordless Senior Cordless Beretto Black Stealth Beretto Chrome Compatible Battery Part Number: 93837-100 ROSH, CE and UL triple certification. Each battery is subjected to strict quality inspection and charge/discharge tests Please Ensure that the PART NUMBER (P/N) of your Battery Matches with one of the Below Supported Part Numbers of this Compatible Battery Before purchase 12-month warranty and 14-day money back guarantee. Please feel free to contact us with any question, 24*7 Email support.