Last January, I purchased Jawbone UP devices on sale for Chris and I. He chose to wear his as a wristband. I chose to stick with the clip that it came with.
They each cost $25, and we had a $50 credit to Amazon. We were excited to try out the latest craze at a relatively low-cost (free for us) and see if it made a difference in our fitness levels.
The first few months we wore the devices, we challenged each other to step totals. We would do week long challenges which encouraged me to walk more during the day. Our goals were 10,000 steps per day. Most days, Chris would make the total, and I averaged around 7-8,000 steps for a good day.