Specification BatteriesIncluded : 1 BatteriesRequired : 1 Brand : AceSoft BulletPoint1 : * Same day shipping for orders before 2:00 PM PST BulletPoint2 : * US Tax Payer BulletPoint3 : * Package includes: 384mAh Replacement Internal Battery x 1 BulletPoint4 : * Compatible with: Samsung Galaxy Watch 5 40mm SM-R900N BulletPoint5 : * If you want to replace the battery more easily, relevant videos of replacing the Battery on YouTube are highly recommended. Color : As shown in picture CompatibleDevices : Watch CompatiblePhoneModels : GLI7426 ExternallyAssignedProductIdentifier : 3531704132942 ExternallyAssignedProductIdentifier1 : 755507652428 ExternallyAssignedProductIdentifier2 : 0755507652428 Hazmat1 : UN3480 ItemName : AceSoft Large Power Displaceable Lithium Upgraded AA Grade 384mAh Battery Compatible with Samsung Galaxy Watch 5 40mm SM-R900N ItemPackageDimensions_Height : 58 millimeters ItemPackageDimensions_Length : 138.5 millimeters ItemPackageDimensions_Width : 80.2 millimeters ItemPackageQuantity : 1 ItemTypeKeyword : internal-cell-phone-batteries Manufacturer : AceSoft ModelName : Samsung Galaxy Watch 5 40mm SM-R900N ModelNumber : CS-HAT420VX NumberOfItems : 1 NumberOfLithiumIonCells : 2 PartNumber : IB0333H ProductDescription : You do not need a special back cover to use this battery This package is specifically designed for the watch we list here, if your watch is not in the list , then it's not for you. ====================================================================== 1)384mAh Excellent Replacement Li_ion Battery: * Brand: Unbranded/Generic . * High quality Li-Ion battery. * Battery Type: Lithium Ion. * Battery Capacity: 384mAh . * Voltage: 3.85V. * This battery is internal battery with pipe line,it has an integrated microchip that prevents overcharging and lengthens battery life. * Best Replacement for the original battery with comparable standby and talk time . * Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using. * Each battery comes with a special chip to protect your watch from over-heating, short-circuit, over charging or over discharging. * Integrated microchip prevents overcharging and lengthens battery life. * When using the battery, please notice that use up all the power of battery for the first three times before charging, and then take a full charge, thus the battery can be reached the optimum effect of using.Please remember that its full performance and longevity is only achieved after 3 to 5 complete charge and discharge cycles. * Replace your existing watch battery with a stronger.(The battery operation time depends on conditions .such as: Transmitting power level, Signal (distance between the watch and the base station),Network parameters defined by the operator.)