Women's Rose Gold Watches
|This is a low-priced, good-quality watch. The watch case is rose gold. The watch's strap is also made of silicone. The movement is a quartz movement. It can be equipped with a Chinese movement or a Japanese machine. core. The silicone material of the watch is resistant to dirt and abrasion, and is the first choice for sports and leisure.|
Specifications of Women's Rose Gold Watches
Brand Name: OEM/ODM
Place of Origin: Fujian, China (Mainland)
Model Number: SYM149024
Type: Fashion, Limited Edition, Quartz
Feature: Water Resistant
Watch Style: Fashion Watch
Watch Case: Zinc Alloy
Watch Caseback: Stainless Steel Back
Watch Band: Silicon Band
Watch Buckle: Stainless Steel Buckle
Watch Movement: Japanese Movement Or Chinese Movement
Water Resistant: 1ATM/3ATM/5ATM
Watch Design: OEM/ODM
Watch Test: ROHS/CE/REACH
Factory Audit: BSCI, SEDEX, AVON, L'OREAL, WALMART, DISNEY, KMART, TARGET, KAUFLAND
Packaging & Delivery of Women's Rose Gold Watches
Packaging Details: Bubble bag
Delivery Detail: Shipped in 35-60days after payment
Temperature changes have a negative impact on the table because temperature changes the elasticity and effective length of the steel hairspring. High temperatures cause the balance to expand and the balance to decrease, while low temperatures accelerate the balance. Therefore, before the invention of the automatic compensation of the hairspring, the Swiss watchmakers used the bimetal compensation balance. That is, the expansion coefficient of the two metals is used to achieve the purpose of temperature error compensation.
More than 200 years ago, the British John Arnold invented the truncated bimetallic compensation balance: there are two cuts near the arm, as a buffer for thermal expansion and contraction of the metal. The outer layer of this balance is copper, which is about 2/3 of the thickness of the balance, and the inner layer is steel, which accounts for 1/3. The two metals have different expansion coefficients. When the temperature rises, the outer expansion coefficient of the copper is larger than that of the inner layer of the steel, forcing the balance ring to bend inward at the cutoff, reducing the radius of the balance and reducing the moment of inertia, thereby compensating for The temperature rises to change the change in elasticity and length of the hairspring. When the temperature is lowered, the shrinkage coefficient of the outer layer of the copper is larger than that of the inner layer of the steel, forcing the balance ring to bend outward, the effective radius is increased, and the rate of increase of the torque is slowed down, compensating for the change of the balance spring accelerated by the low temperature, which is cold. Cold and Heat Adjust.
It is worth mentioning that the light pendulum widely used in the observatory-class movements, before the copper-bismuth nickel alloy is used on the balance wheel, most of them are copper balance wheels, but because the copper itself is affected by temperature, the error changes greatly. And the specific gravity is not uniform, so the observatory movement uses copper-nickel-nickel alloy as the balance material. It is uniform and stable in texture and less affected by temperature. It is an ideal material.