There are several tricks to the Beepwear pager watch. On all that I've seen the battery cycle or collapse is set to a fixed value, this means that if you are able to recrystal it and use the existing capcode on a different paging network they must be using the same battery cycle as the original provider. In my case the pager was originally fixed with a collapse of 3, you can tell if your beepwear is programmed with a fixed value by looking at the capcode, if it has a # then the letter E and then a standard FLEX capcode the first # is the fixed collapse value, an example would be 3E8183459, the capcode is 8183459 with a fixed collapse of 3. If the provider uses a shorter collapse you will miss pages as the Beepwear will be asleep while the paging company transmits pages. There are 3 series of beepwear, the first 3 digits of the serial # determine which series each is. Series # 817 is the most common, it is the original Beepwear, series 836 has basically the same features as the original Beepwear except that it supports FLEXtime,(a feature of FLEX that will set and update the time of the pagers clock automagically), a series 806 beepwear is the BeepwearPro which means it has Timex Datalink and FLEXtime. I will add more and hopefully format this page further as time permits. Any questions, comments or information regarding the Beepwear can be sent to me at beepwear@beeped.com.