Specification BatteriesIncluded : 1 BatteriesRequired : 1 Brand : SwarKing BulletPoint1 : ✔【Free Toolkit】 We offer a free replacement toolkit for replacing the phone battery. What you get: 1 * Battery change and 1 * Replacement Toolkit. BulletPoint2 : ✔【Compatible model】 Compatible with APPLE WATCH 4 44mm . Model No.A2059 . Make sure your phone is suitable for this replacement battery before ordering it. BulletPoint3 : ✔【Great A + Battery Cells】 100% new, high quality, updated battery, uses class A + battery cells with UL, CE and ROHS certification. Each battery has a battery tested under stringent quality control standards and offers you a charge of up to 500+ cycles with the fast and efficient charge. BulletPoint4 : ✔【Maximize Power】This Updated Replacement Battery, Easy Installation, The Same Size As Your Original Battery . No Instructions, There're Lots of Instruction Videos on YouTube, You Can Check Them Out. BulletPoint5 : ✔【Customer Guarantee】 We take care of all quality-related problems with a replacement or a complete refund. If you are not 100% satisfied with your battery change when using this battery during the period, we will reply to you within 24 hours. Color : Blue CompatibilityOptions : iPhone 15/15 Pro/15 Plus/15 Pro Max/iPhone 14/14 Pro/14 Plus/14 Pro Max/13/13 Pro/13 Mini/13 Pro Max/12/12 Pro/12 mini/12 Pro Max/11/11 Pro/11 Pro Max/XS/8/7 Plus, iPad Pro/Air/mini, Samsung Galaxy S24/S23/S22/S21/S20/Tab S9/S8, MacBook Air M2/M1/2020/2019/2018 (Only for 24V models such as trucks), wireless car charger mount, switch, AirPods, Smartwatches, power banks, driving recorder, GPS navigation, car vacuum cleaner, and other devices. CompatibleDevices : Watch CompatiblePhoneModels : OnePlus 7T CompatibleWithVehicleType : 12V-24V Cars ConnectivityTechnology : USB ConnectorType1 : USB Type C ConnectorType2 : USB Type A ExternallyAssignedProductIdentifier : 7427261538883 ExternallyAssignedProductIdentifier1 : 642954852825 ExternallyAssignedProductIdentifier2 : 0642954852825 HardwareInterface1 : usb HardwareInterface2 : usb_c Hazmat1 : LITHIUM ION BATTERIES Hazmat10 : DE_SmallLithiumIonBatteryStandalone Hazmat11 : EG_SmallLithiumIonBatteryStandalone Hazmat12 : ES_SmallLithiumIonBatteryStandalone Hazmat13 : FR_SmallLithiumIonBatteryStandalone Hazmat14 : GB_SmallLithiumIonBatteryStandalone Hazmat15 : IN_SmallLithiumIonBatteryStandalone Hazmat16 : IT_SmallLithiumIonBatteryStandalone Hazmat17 : JP_SmallLithiumIonBatteryStandalone Hazmat18 : MX_SmallLithiumIonBatteryStandalone Hazmat19 : NL_SmallLithiumIonBatteryStandalone Hazmat2 : UN3480 Hazmat20 : PL_SmallLithiumIonBatteryStandalone Hazmat21 : SA_SmallLithiumIonBatteryStandalone Hazmat22 : SE_SmallLithiumIonBatteryStandalone Hazmat23 : SG_SmallLithiumIonBatteryStandalone Hazmat24 : TR_SmallLithiumIonBatteryStandalone Hazmat25 : US_SmallLithiumIonBatteryStandalone Hazmat26 : US_SmallLithiumIonBatteryStandalone Hazmat27 : ZA_SmallLithiumIonBatteryStandalone Hazmat3 : II Hazmat4 : 9 Hazmat5 : AE_SmallLithiumIonBatteryStandalone Hazmat6 : AU_SmallLithiumIonBatteryStandalone Hazmat7 : BR_SmallLithiumIonBatteryStandalone Hazmat8 : CA_SmallLithiumIonBatteryStandalone Hazmat9 : CN_SmallLithiumIonBatteryStandalone IncludedComponents : Battery ItemName : SwarKing Replacement Battery Compatible with A2059 Apple Watch 4 44mm with Toolkit ItemPackageDimensions_Height : 16.5 centimeters ItemPackageDimensions_Length : 1.6 centimeters ItemPackageDimensions_Width : 8.3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : internal-cell-phone-batteries Manufacturer : shenzhen baoran keji youxiangongsi Material : PC Material1 : Polycarbonate Material2 : Silicone ModelName : BTR791C ModelNumber : C835846300P NumberOfChannels : 4 NumberOfItems : 1 NumberOfLithiumIonCells : 1 NumberOfLithiumMetalCells : 1 NumberOfPorts : 4 PartNumber : dedf4 PowerSourceType : Car Cigarette Lighter ProductDescription : Compatible Cover for AC791L Hotspot - Black (BTR791C) ProductSiteLaunchDate : 2021-04-30T01:50:18.724Z RecommendedUsesForProduct : Watch Reusability : Rechargeable Size : 7.2 x 4.65 x 0.63 inches Style : Modern SupplierDeclaredDgHzRegulation : transportation SupplierDeclaredDgHzRegulation1 : storage SupplierDeclaredDgHzRegulation2 : transportation SupplierDeclaredDgHzRegulation3 : waste SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 Voltage : 3.85 volts WarrantyDescription : Lifetime Warranty Wattage : 15 watts WirelessCommStandard : bluetooth