I saw this clock at IKEA the other day and bought it for about 300 yen.
When you change the direction of the time, it becomes a stopwatch with the temperature worn.
I think it would have been nice to have a room thermometer. Well, it was cheap and I thought there was no harm in having it.
ただ、思った以上に見づらいし不便ですねこれ(笑)