Donaldson's on Warner is a great watch shop to bring your expensive Swiss timepiece for a battery change or service without paying the huge premiums the Swiss watch "retail" shops charge. They have worked on my Tag Heuer twice: once for a full cleaning and today for a quick battery change (took about 8 minutes). They can pressure test timepieces for water tightness and work on all types and brands. The lady that waited on me was very friendly and knowledgeable. She recommended some different options but was not pushy about them when I declined. I recommend this shop and will continue using them.