What I like:
- On the door constantly
- It is easy to put on and remove
- It is stylish
- It is resistant to water (but avoid swimming with)
- It measures not
- It measures sleep (light, deep)
- Synchronization is done by bluetooth, very simply
- The smartphone application is really well done
- The battery life about a week without recharging
- The "nap" mode that allows for a "power nap" (nap)
- The vibrant and intelligent alarm clock (it wakes you at the best time)
What I like least:
- The risk of losing the small cover that must be removed for recharging UP24
- The price which is quite high
In summary I am happy with my purchase.