SaviorHeat 5V 2A transform Cable with Original USB US adapter for Li-Polymer Rechargeable BatteryFeatures:Included 1x8.4V DC Wall Dual Charger for Rechargeable 7.4V 2200mAh, 3000mAh Li-ion Batteries. USB Charger OnlyUse for Savior Heat Brand Battery Heated Gloves, heated mittens, heated liners, heated socks, heated jackets & vestsInput: DC5V 2A, Output: DC8.4V 600Ma*2Charge your batteries with provided charger kit at room temperature for 3-4 Hours before the first time use, the indicator light will turn to solid green when it was fullRemove the batteries from the heated gloves mittens liners and socks before washingSpecifications:Color: BlackSize: MediumItem Package Dimensions L x W x H: 4.25 x 2.72 x 2.44 inchesPackage Weight: 0.11 KilogramsMaterial: DC Wall ChargerSuggested Users: Unisex-adult, MensPower Source: Battery Powered Savior Heat 5V Transform Cable with Original USB Adapter for Li-Polymer Rechargeable Battery