Since 1993, the Seamaster Professional Diver 300M is a reference. The actual models are a mix of this heritage and the last innovation and design. Silver-tone stainless steel case with a blue rubber strap. Uni-directional rotating blue ceramic bezel. Grey dial with blue hands and index and dot hour markers. Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides.Luminescent hands and markers. Date display at the 6 o'clock position. Caliber Omega 8800 automatic movement with a 55-hour power reserve. Screw down crown. Transparent case back. Round case shape. Case size: 42 mm. Band width: 20 mm. Deployment with push button release clasp. Anti‑magnetic, Chronometer, Date, Helium escape valve. Ref. 21032422006001 , 210.32.42.20.06.001 Box.94100301, 94109844