Bruce Tolley wrote a review of Suunto Battery Kit for 1st Gen. Vector, X-Lander, Altimax, Advizor, Yachtsman on May 14, 2012
Install kit works great. I bought my Suunto watch in 2007 and this is the second replacement battery. Be sure to make sure the watch back is clean before you unscrew the cover and the O ring is properly sealed.
I formally bought the replacement kit inside my local REI. Since REI is reducing the SKUs they carry in the store, I was OK buying it on the web.