Longines are one of the biggest names in watches, with a rich history extending back to their founding in 1832. These days Longines are a brand under the umbrella of the Swatch Group, sitting alongside other top names like Tissot and Omega.
Our client’s Longines is a fairly recent model – approximately ten years old – a Conquest automatic watch, with a 24 hour hand and date. It was reported to have a date change related problem, and as it had not been serviced, this was certainly required.
The movement powering this watch is an ETA calibre A07.171. This is part of the ETA Valgranges range – large movements derived from the excellent 7750 chronograph. This calibre has 24 jewels and a theoretical 46 hour power reserve. It beats at 28,800 beats per hour.
To service the watch, the movement is completely disassembled and pre-cleaned, with each part inspected. The disassembled movement is then run through our specialist watch movement cleaning machine, while the case and bracelet are cleaned in an ultrasonic cleaner. After cleaning the movement is carefully reassembled and oiled. The dial and hands are then refitted, before the complete movement is fitted into the case.
After the watch is correctly reassembled, it is pressure tested to ensure it remains water resistant. This model is rated to 300m water resistant and we are able to test to this depth using our Sigma watch pressure testing machine. This specialist machine uses air pressure and a special sensor to test for the deformation of the case when under pressure. If this falls outside of specific parameters, the watch fails. This watch passed to 300m.
Now this fantastic Longines Conquest watch can go on test – confirming its timekeeping and functions are working correctly before we return the watch to our client.
Do you have a Longines watch in need of repair? Get in contact with us to see how we can help. We are able to repair almost any Longines watch and we offer a comprehensive watch repair service. We cater to clients all around the UK thanks to our fully insured freepost watch repairs service. You can also bring watches in to our showrooms based in Lewes and Uckfield, Sussex. As Business Partners of the British Horological Institute and a Feefo Platinum Trusted Service Award accredited business, you can be confident when dealing with us.
Yours sincerely
David Clark DGA PJDip PJGemDip CertGA
Managing Director
W.E. Clark & Son Limited