There are few single addresses in Lausanne or indeed in the surrounding area of Lake Geneva where you can view the collections of Patek Philippe and Rolex together and, if you are an existing customer of either brand, have your watch serviced on site. With just a single exception (the Rolex DeepSea, which requires testing in a specially designed container to check its water resistance to 3,900 metres), A l’Emeraude can handle servicing work for any Rolex watch. Watchmaker Loïc has been trained by on the Rolex base calibres as well as the Daytona chronograph movement and has also attended exacting training courses at Patek Philippe. The second in-store watchmaker, Oliver, who has 12 years of experience at A l’Emeraude, handles all other brands sold by the store. Both watchmakers are also equally qualified to sell watches to customers.