Kit Includes Battery*1 Compatible Models : Galaxy Watch3 45mm, SM-R840, SM-R845 Battery Part Number : EB-BR840ABY, GH43-05011A Battery Parameters : Voltage:3.85 V Capacity: 330mAh / 1.27Wh Size: 23.30 x 23.50 x 4.12mm mm Net Weight:5.4 g Friendly Reminder : After the battery is placed for a period of time, it enters a dormant state, and the capacity is lower than normal. Multiple normal charge and discharge cycles are required to activate the battery and restore normal capacity. Installation Tips : If you want to make replacing your battery easier, we highly recommend watching this battery replacement video on YouTube. Novices can easily install, no need to worry about the installation is too complicated. Tips Before Purchase : Please double confirm the compatible model and original battery part number before you purchase it.(You can quickly search with Ctrl+F). If you are not sure,please send email to us with your battery details or pictures, we will give you professional suggestions.Your satisfaction is very important to us,if you have any questions,Please send eamil to us,and we will reply within 24 hours.Great after-sales Service : If there are any problem with the product, please tell us in time. We will help you as soon as possible!. Quality Certification : ROSH, CE and UL triple certification. No memory effect, over-charge, over-discharge, over-heat, over-current and short-circuit protection. High capacity circulation function, excellent replace your original batteries. Prompt Before Use : When the new battery is used for the first time, it is in the protected state and requires a long time to charge and activate, Please wait patiently!If it is not fully charged and activated, the battery may not work or the running time is short. Battery Specification : Voltage:3.85 V, Capacity:330 mAh/ 1.27 Wh, Size:23.30 x 23.50 x 4.12 mm, Weight:5.4 g. Excellently Compatible : Suitable for EB-BR840ABY, GH43-05011A.