Battery swelled up and the display came off, but the display is fully working and it gives more than 5 days of battery backup. You can check it as much as you want.
Must come to location. There is not a single issue; if you find one, I will give it away for free. Repairing will cost at most 700tk, just change the battery and the watch will be brand new.
Price almost fixed, don't bargain unnecessarily.