Show HN: Our new $149 hackable Bluetooth wristwatch 
For comparison: Texas Instruments sell something called the EZ430 Chronos watch, which has a much lower-res display, a proprietary RF protocol with a USB transceiver, and a bunch more sensors including 3-axis accelerometers, pressure and temperature.It is based on the MSP430 microprocessor which is much less powerful than this thing, its capped at 16mhz or something IIRC and only has around 8K of program space. It is however about a third of the price.http://processors.wiki.ti.com/index.php/EZ430-Chronos