When i saw this i remember my High School friend Abhi (Abhinandan), he had built an advanced DIY Wrist Watch with LED Display and Radio, there might have been a temperature mode too.
This Gizmo got many students wildly interested in Electronics. He also developed a Learning Kit ‘Chip Chap’ for 555. An Innovative Education Kit Developer Dynam was making it..
Here is one such Temperature, Wireless, USB Data Logger Watch Development Tool. But for an entirely New Generation. – Ananth
The eZ430-Chronos is a highly integrated, wearable wireless development system based for the CC430 in a sports watch. It may be used as a reference platform for watch systems, a personal display for personal area networks, or as a wireless sensor node for remote data collection.
IAR Systems has collaborated with TI to develop some unique application examples for the TI Chronos Watch using IAR visualSTATE and IAR Embedded Workbench. The example applications are using the low power wireless communication hardware built into the Chronos watch to communicate with a heart rate monitor.
Make a Custom eZ430 Chronos Watch