Everything about Rolex Explorer II 216570 Black Dial Apr 17
rolexCalibre 3285 incorporates the Chronergy escapement patented by Rolex, which combines significant Power effectiveness with wonderful dependability. Crafted from nickel-phosphorus, it is also insensitive to magnetic fields. The motion is equipped with an optimized blue Parachrom hairspring, made by Rolex inside of a paramagnetic alloy that make