the watch: http://processors.wiki.ti.com/index.php/EZ430-Chronos?DCMP=Chronos&HQS=O... http://processors.wiki.ti.com/index.php/EZ430-Chronos?DCMP=Chronos&HQS=Other+OT+chronoswiki
briefly: <1GHz wireless transceiver 3-axis accelerometer (XYZ) pressure sensor temperature sensor reprogrammable for custom wireless applications
the downside is that the battery is not rechargeable, so if you use send the accelerometer continuously, the battery will last 2 days. it sucks.
à+