Made of nickel-phosphorus, It is usually insensitive to magnetic fields. The movement is equipped by having an optimized blue Parachrom hairspring, manufactured by Rolex in a very paramagnetic alloy. The blue Parachrom hairspring is supplied with a Rolex overcoil, guaranteeing the calibres regularity in any situation. The oscillator is fitted to th

two hundred m.[139] The way of shell coiling would demonstrate to be critical to the future results from the lineages; endogastric coiling would only allow big dimensions to Squid become attained that has a straight shell, whereas exogastric coiling to begin with instead