Case material: 316L steel. Bracelet material: 316L steel. Bezel: fluted, made of 316L steel. Dial color: blue, analog with luminous silver-tone hands and Roman numeral hour markers; minute markers present around the outer rim. Date display at the 3 o'clock position. Movement type: automatic Tudor calibre T201 (based upon ETA 2671); contains 25 jewels; beats at 28800 vph; power reserve approx 38 hours. Crystal: scratch resistant sapphire. Functions include date, hour, minute, second. Water resistance depth: 100 meters / 330 feet (approx). Case back type: solid. Bezel is screw-down. Clasp type: fold over clasp with safety lock. Watch collection series: Royal Series.
![[Model Number]: Tudor Black Bay 31 Automatic Chronometer Blue Dial Ladies Watch](https://cdn.lepodium.net/images/000/070/70015-2.jpg)
