The MuRata 361 is a compact, reliable button cell battery designed for a broad range of applications. This battery is made with reliable silver oxide chemistry for long lasting power, and is entirely mercury free. Small size and flat terminals make the MuRata 361 perfect for small electronics such as watches. With 1.55 Volts of power and a 29mAh capacity, this 361 watch battery outperforms competing cells and is the best choice as your replacement battery.