The R890 Battery EB-BR935ABY is specifically designed for the Samsung Watch 6 40mm. This smart watch battery offers reliable performance and a significantly longer lifespan compared to other replacement options. It is made with lithium-ion technology to ensure consistent power supply. Our battery is a perfect choice to keep your Samsung Watch 6 40mm running smoothly. We guarantee 100% satisfaction. Get yours now and enjoy uninterrupted usage of your smart watch.