It only works with the index finger. The size feels like it's twice as small as the similar watch I bought at Daiso in the past. Anyway, it's not bad since you can see it from about 2 meters away if you like minimalist things, but the watch strangely doesn't last long. I don't even throw it around like a desk clock; I've changed it about once every 3 years so far. Every time the battery runs out, I see that the metal parts are rusty and it's not like it's used anywhere. Anyway, I guess electronic watches don't have that long of a lifespan.
