I can't figure out how to open them to finally replace the battery! About ten years ago I bought some remarkable black plastic diving watches from Woolworth for like under ten bucks. Indeed, they lasted way beyond seven years. They said QUARTZ 30M 7YR LITHIUM BATTERY on the outside, use CR2015 batteries and mention "X'TAL CASE" on the back. It is a joint Japanese outside and Chinese inside production. What appears to be the back cover plate might not be a plate at all but continuous with the rest of the case. A little ring from the faceplate came off and it seems like at least the front part under it is like sealed with plexiglass. My suspicion is the "X'TAL" case is dunked in some plastic (resembles plexiglas) and can't be opened. Normally, I'd say, cheap (disposable) watch, returned its value, junk it; But these things worked really well. I even wiretied one onto the handles of my bike. Anyone have a clue?
- = - Vasos-Peter John Panagiotopoulos II, Reagan Mozart Pindus BioStrategist