Maxell 337 SR416SW 5 Batteries BOGO

Do not use (inherently low performing) alkaline batteries in place of silver oxide in any timepiece: alkaline batteries have declining power output.

Made in Japan: for best results always use a Japan battery in a Japan timepiece
Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine)
Mercury Free
This is a primary non rechargeable disposable battery

This is the worlds smallest watch battery. The 337 is a long life silver oxide chemistry with non-declining power output; alkaline batteries of the same 1.5 voltage start at 1.5 and at the half life are at .8 volts, silver oxide start at 1.55 volts and maintain the voltage until expiring. This is why silver oxide batteries are always used in watches, insulin pumps and sniper scopes or mission critical situations. Never use alkaline batteries for any device requiring a steady constant voltage. A watch with declining voltage may prove undependable.

This is from the American Watchmakers-Clockmakers Institute 2008 Edition Handbook "Battery Number System". This Battery is cross-referenced as: AWCI S70, Energizer 337, UCAR 337, Eveready 337, Citizen 280-75, Maxell SR416SW, Panasonic SR416SW, National SR416SW, Rayovac 337, SEiko SR416SW Toshiba SR416SW. 

Dealers have my permission to use this copyright research at no charge if you acknowledge "from Bob" as the source. You will have access to my ongoing updated material corrections and updates with new information.

Fits and replaces: 

• Alba Y15
• Anne Kline 7328/2
• AWCI S70
• Bulova Crystal 96T15
• Bulova Quartz A2
• Casio Module 381
• Citizen 280-75
• Citizen 542
• Citizen 5420M
• Citizen 5421
• Citizen 5421-518523
• Citizen 5421-521532SMB
• Citizen 5421A
• Citizen 5421-F44701
• Citizen 5421-H14399YG
• Citizen 5422
• Citizen 5422A
• Citizen 5430
• Citizen 5430A
• Citizen 5431
• Citizen 5431A
• Citizen 690202
• Citizen 701506
• Citizen GN08
• Citizen S21532
• DAlton BXX22307
• Duracell D337
• Energizer 337
• Eveready 337
• Interstate Batteries AWAC5065
• Lassale Credor 1F20
• Lenmar CBA337
• Maxell SR416SW
• Maxwell SR4168SW
• Maxell SR416W
• Maxell SR418SW
• Maxell SR418W
• Maxwell SR416SW
• Mityota 5R21
• Mityota 5R32
• Mityota SE416SW
• MIY 5R32
• Miyota 5R21
• Miyota 5R32
• Miyota MIY 5R21
• National SR416SW
• Panasonic SR416SW
• Philip Stein Teslar
• Rayovac 337
• Seiko 1F20
• Seiko 1F20-5A69
• Seiko 1F20-5A69 R0O
• Seiko 1F20-5A69R0
• Seiko 1F20-5A69R0O
• Seiko 1F20-5B19
• Seiko 1F20-5B29
• Seiko 1F20-5D50
• Seiko 1F20-5D59
• Seiko 1F20-5G19
• Seiko 1F20A
• Seiko 1F20-GE90
• Seiko 1F21
• Seiko 1F21A
• Seiko 3NO141
• Seiko 5420
• Seiko 5420A
• Seiko 5421
• Seiko 5421A
• Seiko Lassale 1F20
• Seiko Pulsar Y150-0A50
• SEiko SR416SW
• Seiko SYL793
• Seiko U1F2-020
• Seiko Y150-5N90
• Seiko Y150A
• Skagen 590SSLB
• Skagen BCBGMAXAZRIA
• Skagen LTD
• Skagen MA0511
• Sony SR416SW
• Toshiba SR416SW
• UCAR 337
• Union Carbide 337