All the watches I have bought over the years broke down in very short order - from the 250B Pattaya street stall ones to the fake Rolex ones in the BKK night market. You can change the battery but often the fault is more serious than that and the watch remains dead.

On the other hand, a mate of mine bought a fake Rolex at the same time as me, from the same stall as me - and his was still going strong after 5yrs