Quality Control

From component to final product inspection, every detail is carefully checked & tested before delivery.

Material quality control testing.

● Case size inspection.

● Hole size measurement.

● Polishing inspection

● Watch case washing.

● 1st waterproof test

● 2nd waterproof test

Case Size Inspection

Every 20 watch cases, after cutting, are carefully measured with a caliper to ensure the dimensions are consistent with the design.

Hole Size Measurement

The diameter and depth of each watch hole are measured with a dial gauche to make sure the size difference is kept within 0.01 mm.

Polishing Inspection

After polishing, every watch case is meticulously inspected by our QC staff to make sure it's scratch-free & well- shaped.

Watch Case Washing

Watch cases are cleaned thoroughly with an ultrasonic machine before assembly to remove the dust & debris accumulated in the previous processing phase.

1st Waterproof Test

Every watch case should undergo a waterproof test which ensures the exterior structure is waterproof before assembling interior components.

2nd Waterproof Test

After the assembly of interior components, the watches will undergo a 2nd test to double check its waterproof performance.
 

The completed watches testing:

(1) Appearance inspection: observe whether the marks on the dial, back cover and crown are consistent, and check the case, surface and hands for serious scratches.

(2) Sensitivity test: In the state where the mainspring is completely relaxed, move up and down three times. If the sensitivity of the second hand movement is deemed acceptable, otherwise it is not sensitive.

(3) Sound check: When winding, the movement must not "click". If there is sound or slipping, it means that there is a problem with some of the previous parts. In addition, if the interval between the "snoring" sounds heard by the watch is significantly different, it means that the watch has a serious deviation phenomenon. If the sound is fast and chaotic, it indicates that there is a swing phenomenon.

(4) Checking the setting hand: When setting the hand counterclockwise, the second hand can stop or go back, but when the setting hand is stopped, the second hand should start to move again. Otherwise, it indicates that the sub-wheel in the movement is not tight.

(5) Coincidence check: Turn the hour, minute and second hands to the overlapping position, and check whether there is any friction between the second hand and the glass, between the hour hand and the dial and the three hands. Then observe it step by step at 3, 6, 9, and 12 o’clock.

(6) Calendar check: When checking the watch with the day of the week and calendar display function, there should be no skipping characters or skipping characters.

(7) According to national standards, according to timing accuracy, domestic watches are divided into 4 grades, and the daily differences of the first, second, third, and fourth grades are large or less than ± 30 seconds, ± 45 seconds, ± 60 seconds, and ± 90 seconds, respectively.