Maxell 397 SR726SW 0% Mercury 1.55V Silver Oxide Watch Battery (Pack of 5) - Maxell is the first company in Japan to successfully market button-type silver oxide batteries and has many years of experience and know-how. Also, in consideration of the environment, all products are designed to use zero mercury. Additional Details ------------------------------ Product description: Maxell Watch Battery Button Cell SR726SW 397. Maxell is a worldwide leader in small electronics batteries. Maxell offers a full line of Watch Electronic Specialty Batteries for applications used in precision engineering tools to power a wide variety of small electronic devices. Maxell batteries are used in home health devices such as glucose monitors, blood pressure cuffs and digital ear thermometers. Also, button cells can be used in keyless remote entry systems for cars and homes. Hand held electronic devices also use batteries in calculators, watches, photo camera, computers, audio books, games, toys and more. Made in Japan.