Tiankenuo brand watches.

Swiss means Switzerland, and techno means "Tiankenuo", an old Swiss watch brand.

Extended information:

Everyone knows about Swiss watches, and they are all expensive. But the watchmaking industry is not native to Switzerland. At the end of the 16th century, religious struggles in France led to a massacre. The Huguenots who followed Calvin fled to Switzerland and brought clock-making technology with them. The combination of this French skill and the local gold and silver jewelry industry gave rise to the Swiss watchmaking industry. It spreads from Geneva, near France, mainly to the northeast along the Jura Mountains, all the way to Schaffhausen in the northeast, and blooms all over the northern half of Switzerland.

Identification method:

(1) Check the appearance of the watch: The appearance of the Swiss watch can be checked from the aspects of the case, cover, dial and hands. The Swiss watch case should be symmetrical with no scratches or blisters, and the back cover and case should be tightly screwed together. The two pairs of holes for installing the watch strap spring should be centered and of appropriate depth to prevent the watch strap spring from falling off easily. The surface cover should be smooth and transparent, without scratches or defects. The coating on the dial and hands should be bright, and the minute and second scale lines and luminous dots on the dial should be perfectly illuminated.

(2) Check the sensitivity of the watch: The sensitivity of the Swiss watch refers to how quickly the balance wheel in the watch starts on its own. If an unwinded watch is shaken slightly and the second hand starts and then stops quickly, or if the second hand starts to move after only winding the clockwork for two or three times, it means that the watch is not working properly after winding the clockwork two or three times. Just start walking, which shows the sensitivity of this watch. High-frequency fast (pendulum) watches require more winding and unwinding of the second hand before the second hand moves due to the greater stiffness of the hairspring. This is a normal phenomenon and does not mean that the sensitivity is low.

(3) Check the efficiency of winding the watch: When winding a normal Swiss watch, your hand should feel gradually tightening. When it does not move, it means that the winding has been fully wound. If there is an abnormal "chuck, chuck" sound when winding, or the stem slips, it indicates that there is something wrong with the winding part.

(4) Check the gap and mutual position of the hands: There should be a certain gap between the hands of the Swiss watch and the dial and cover, as well as between the hour, minute and second hands. Otherwise, movement will be affected. Set the hour and minute hands to three o'clock, six o'clock, nine o'clock, twelve o'clock and other positions respectively. At three o'clock and nine o'clock, the two hands should form an angle. The needles form a straight line. At twelve o'clock, the two needles should be together. If this is not the case, the minute hand and hour hand are not installed correctly relative to each other.

(5) Check the tightness of the Swiss watch when the minute hand rotates. Turn the minute hand and hour hand continuously for twelve hours. If there is no obvious feeling of looseness or tightness between the minute hand and the hour hand at each position of the twelve hours, it means that the needle movement part of the watch is installed normally.

(6) Check the sound when it moves: wind the watch a few times and listen to the sound when it moves. If the sound is uniform, clear and without noise, it means there is no major problem with the watch, because The quality of a watch mainly depends on the accuracy of the actual time rather than the quality of its sound. Therefore, listening to the sound can only give a rough estimate of the quality of the watch.

Reference: Baidu Encyclopedia-Swiss Watch