It doesn't hold it solar charge for as long as I would like -- it holds it a month -- and I am wearing it uncovered during the day but not outside a lot.  I put it in a sunny window that has a window screen and it wouldn't charge very well, so an incadescent light bult in a lamp pointed straight down at it for day or two will charge it.  I periodically now try to put it under my lamp at night to help with the charge.  Not expecting to have to do this.

I also was able to get an extra link for free by contacting Pulsar.  It doesn't come with any extra links. Pulsar was supposed to send me 2 links and their paperwork they mailed said 2 links, but only one was in the package.  I got lucky and only needed one link, but it could have been a pain to have to buy a link if I needed them both as they are expensive to purchase separately.