The Tt version of the Master Collection Eight-Needle Moon Phase has remarkable sales. Upgraded version: Longines - Master Collection 8-Needle Moon Phase 40mm. The Longines Master Collection Eight-Needle Moon Phase features a 316 stainless steel case and bracelet, with a moon phase dial that is identical to the original. It is equipped with an imported automatic mechanical movement, modified from the original rotor, and includes a sapphire crystal, folding clasp, and is water-resistant up to 30 meters!