A one-piece seamless case and self-locking "Aquaseal Crystal" hermetically seal the new Longines"Admiral-1200" watches. Water, perspiration, air-borne dust can't get in. Rust cannot damage the fine steel pivots of the superlative movmement. It is shock-resistant, anti-magnetic, has rustproof balanceand hairspring and unbreakable mainspring.
Sports Illustrated, November 17, 1958