Recently I switched from a Planet Bike Protege computer that had a built in thermometer to a Cateye Strada that did not have a thermometer. I like having a temperature reading device on the bike. Riding in all kinds temperature and it is nice to know what the reading is when I am riding ... and I missed having one.
I saw the Stem Captain and put one on the threadless headset center cap of my LHT. I nice little item, seems well built and very simple to install.
I opted for the thermometer, they also had a clock, compass and a picture holder.