The Adina Amphibian dive watch NK167 S2FSÂ is robustly constructedÂ fromÂ cold stamped, nickel free all stainless steel. This classic divers' case houses a fully repairable Swiss movement, in addition is equipped with a sapphire crystal for unparalleled scratch resistance.Â The Amphibian Collection all being 20ATM water resistant are designed for everyday use including swimming, showering and adventures of almost any kind! This performance based Adina Amphibian employs an internally threaded screw crown system for supreme water and dust protection. .The Adina Amphibian dive watch NK167Â S2FS Â feels superb on theÂ molded P.U. strap but can also be fitted with an exquisite feeling solid stamped stainless steel bracelet. A qualified watchmaker has assembled this watch, as with every Adina watch with care and precision in Brisbane, Australia.