Specifications
A concise reference view of the case, dial, bracelet and movement details buyers compare first.
Case
| Diameter | 34 mm |
|---|---|
| Thickness | 10 mm |
| Lug width | 8 mm |
| Shape | Round |
| Material | steel |
| Bezel | Fluted |
| Bezel material | Stainless Steel |
| Crown | Screw-Down |
| Crystal | Sapphire crystal |
| Water resistance | 10 bar / 100 m |
| Water Resistance Category | Swim |
Movement
| Calibre | Tudor Calibre T601 |
|---|---|
| Calibre family | T-series |
| Movement | automatic |
| Power reserve | 38 hours |
| Frequency | 28,800 vph |
| Jewels | 25 jewels |
| Stop Seconds | Yes |
| In House Movement | No |
Additional details
| Bezel Material Original | steel |
|---|
Dial and bracelet
| Dial | Black |
|---|---|
| Dial finish | Sunburst |
| Markers | Roman |
| Display | Analog |
| Date | Yes |
| Calendar | Simple |
| Lume | Super-LumiNova |
| Luminous display | Yes |
| Bracelet | Bracelet |
| Bracelet material | steel |
| Strap material | Stainless Steel |
| Strap color | Silver |
| Clasp | Folding Clasp |
Functions and complications
| Complications | Date, Power Reserve |
|---|---|
| Complication count | 2 |
Reference details
| Gender | Unisex |
|---|---|
| Production status | Active |
| Origin | Switzerland |
| Warranty | 5 years |
| Size category | Small |
Recent price movement
Tracking 5 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer.
About this reference
At 34 mm, the Tudor Royal M28400-0004 gives the collection a compact unisex proportion with a black sunburst dial and simple date display. Roman markers bring definition to the dial, while the round stainless-steel case is framed by a fluted steel bezel and sapphire crystal. A silver steel bracelet with folding clasp, screw-down crown, Super-LumiNova and 100-metre water resistance complete the watch.
The Royal is powered by Tudor Calibre T601, a 5.5 mm-high, 25.6 mm-diameter automatic movement in the T-series. Its full rotor winds bidirectionally and provides 38 hours of power reserve, with a 28,800-vibrations-per-hour operating frequency. The quickset date and stop-seconds mechanism support the time-and-date display, while a Nivarox hairspring and 25 jewels define the calibre's principal technical details.








