Yusuf changed my Tissot battery. I used to have it changed at the Swatch repair centre. After years of paying the exorbitant prices I looked up an alternative and found Oyster. Yusuf was very polite and forthcoming. He was also extremely reasonable. Within 10 minutes my watch was up and running again, and he also pressure tested it and provided me with a printed copy of the results. He is a very fine person as well. Note, the signage on the store does not indicate Oyster Repair, it's actually a jewelry shop, so make sure you don't miss it. Thank you Yusuf! I'll be back.