[7s26b]

I always use Seizaiken now, SII made - and OE on a lot of Seiko watches. http://www.sii.co.jp/en/me/datasheets/silver-oxide/seizaiken/ http://www.sih.com.hk/sih_eng/products/bat_01_silver.html

 

[7s26b]

Tony, here is a wikipedia page ...scroll down to the list of cell compositions and you will see that silver oxide batteries have a minute bit of mercury but no lead listed.

To be politically eco friendly, the tag says NOT to discard them in the trash can.
http://en.wikipedia.org/wiki/Battery_recycling

I agree, it's probably to encourage recycling - but Seizaiken's Silver oxide cells don't use mercury anymore - http://www.sii.co.jp/en/me/datasheets/silver-oxide/seizaiken/