if anyone is interested, there is a timer called Invisible Clock that is expensive ($39.) but really helpful. Small (inch and 1/2 by 2), vibrates or beeps, chose volume, has an incredible amount of functions for such a little device - including the "custom timer" that allows you to set it to beep at whatever intervals you want (great for active exercise) and a clip to wear it if you like.
Since i travel often, and have a schedule that changes a lot, this is perfect for programing for different needs at different times. it is really helping me with staying consistent in SFQ practice. get it on their web site or ebay.
easy to program, too. just passing on info (this probably sounds like an advertisement - but it isn't!)
Best,
d.
