Longyan has a longines-bound mechanical watch with good appearance, sapphire watch, gold-plated case, classic 847 hand-cranked ultra-thin movement, accurate time, normal functions, vigorous and powerful movement, clean as new, and gem handle. Zhangping can accompany the test and support downwind express delivery in other places.

Installation and Maintenance of Longines Watch

Longines test all mechanical settings, disassemble the movement into parts, then carefully check whether each part is worn or damaged, repair or replace it if necessary, remove oil stains from the disassembled movement, and clean all stains with special liquid. If necessary, with the help of ultrasonic cleaner, reassemble the watch movement after cleaning, and lubricate all bearings and movable surfaces one by one with lubricant distributor.

The case is disassembled into parts, mirrors, sealing rings and other parts one by one. The case, bracelet and clasp have been re-polished, polished and brushed. The case, metal bracelet and clasp are put into special liquid for ultrasonic cleaning. All sealing rings, buttons and crowns that need to be replaced should be replaced. The case is sealed without movement, and the waterproof performance is preliminarily tested.

After successfully testing and adjusting the movement and case, the movement is fixed in the case, the watch calibrator is used to check the accuracy of the watch in five main directions, the appearance of the watch is checked and all technical functions are checked at the end of full service, and the watch is returned to the customer after several days of accuracy test.