Automatic movement. Tudor Calibre T201, based on ETA 2671 with 25 jewels and 28800 vph frequency (approx. 38 hours power reserve). Silver-tone stainless steel round case size 26mm featuring fixed bezel. Black leather strap secures via fold over clasp with safety release. Analog dial has silver-tone hands, diamond hour markers and date display at the 3 o'clock position. Scratch resistant sapphire crystal lens. Water resistant to 100 meters (approx. 330 feet).