Balance spring is the important part of movement, which can control the balance wheel to perform isochronal reciprocating actions.
At present, perfect replica Rolex watches for sale apply two balance springs: Parachrom and Syloxi.
This is blue niobium balance spring, which is also called niobium zirconium alloy balance spring. It is one of the symbols of Rolex. It is widely used on Rolex caliber 31 and 32(like 3135 and 3235) and Rolex caliber 4130. The first automatic Rolex Daytona 116520 watch with caliber 4130 was born in 2000.
The biggest feature of Parachrom is its diamagnetism.
Syloxi balance spring has better dismagnetism than Parachrom balance spring.
It is made from silicon. After entering the 21st century, “Silicon technology” has become popular in watchmaking industry. Almost small size fake Rolex watches for women are equipped with Swiss movements with Syloxi balance spring.