Maxell is the first company in Japan to successfully market button-type silver oxide batteries and has many years of experience and know-how. Button-type silver oxide batteries such as this 321 battery are characterized by high-energy per unit volume and stable operating voltage. As a result, they are used as a power source for applications such as quartz watches, and in recent years their use has expanded to medical devices and BLE devices. This Maxell battery is ideal for 321 battery replacement.

Maxell 321 battery (SR616SW) works in: watches, computers, keyless entry devices, calculators, hearing aid devices, garage door openers, toys, games, door chimes, pet collars, LED lights, sporting goods, pedometers, calorie counters, stopwatches, industrial, medical and electronic devices.

Battery Equivalent: AWCI S14, 363, SP3 6 4, SP363, RW320, 36 , Renata 51, Renata 31, Seiko TR621W, Seiko SR/TR621W, Sony SR621W, Sony 3 6 4, Sony 363, Toshiba SR621W, Toshiba W1V