From Holden’s Watch Desk research
Sugess MoonPhase Master Automatic
The Sugess MoonPhase Master Automatic (SU2528STRB) is a complication watch from Sugess: a 41 mm 316L Stainless Steel case, 13.8 mm thick and 48.5 mm lug to lug, with an automatic movement and 50 m water resistance.
Going by its 48.5 mm lug to lug, it should sit within the flat top of a wrist of about 6.6 inches (16.7 cm) or larger.
Research found it at $210 list in the US (checked September 2026), $145 on the street (September 2026) and $110 used (September 2026).
Specifications
From the research, with the sources for each group of facts. Unknown means no source confirmed it.
| The watch [1][2][3] | |
|---|---|
| Brand | Sugess |
| Reference | SU2528STRB |
| Category | Complication |
| Production | In Production (introduced 2021) |
| Case and size [1][2][3] | |
| Case diameter | 41 mm |
| Lug to lug | 48.5 mm |
| Thickness | 13.8 mm |
| Lug width | 21 mm |
| Case material | 316L Stainless Steel |
| Crystal | Unknown |
| Water resistance | 50 m (5 ATM) |
| Weight | 82 g |
| Movement [1][2][3] | |
| Movement | Automatic |
| Power reserve | 48 hours |
| Accuracy | -10 to +30 sec/day factory range (real-world owner reports often -6 to +15 sec/day) |
| Bracelet [2][3] | |
| Bracelet or strap | Strap |
| Clasp | Signed 316L stainless steel pin buckle |
| Price and warranty (US) [1][2] | |
| List price (US) | $209.99 |
| Street price (US) | $145 (September 2026) |
| Used price (US) | $110 (September 2026) |
| Warranty | 12 Months Worldwide Warranty |
Will it fit?
A watch wears comfortably when its lugs stay on the flat top of the wrist. Here is the 48.5 mm lug to lug against the flat top estimated for common wrist sizes.
| Wrist | Flat top | Fit |
|---|---|---|
| 6 in 15.2 cm | 47 mm | Likely overhangs |
| 6.5 in 16.5 cm | 51 mm | At the edge |
| 7 in 17.8 cm | 55 mm | Comfortable |
| 7.5 in 19.1 cm | 59 mm | Comfortable |
| 8 in 20.3 cm | 63 mm | Comfortable |
Check it against your own wrist An estimate, not a guarantee; how the method works is on the tool page.
What the research found
These are the research’s judgments, scored against Holden’s priorities, not his own words.
Strengths
- True astronomical 29.5-day moonphase driven by an integrated 59-tooth gear advancing daily (accurate to ±1 day every 2 years)
- Captivating natural blue sandstone / aventurine-effect star dust dial that creates a rich miniature night-sky aesthetic
- Twin-window big date complication at 12 o'clock offering complex calendar architecture unheard of in sub-$250 mechanical horology
- Scratch-resistant double-domed sapphire front crystal with clean 316L stainless steel case finishing and polished chamfers
- Remarkable value proposition delivering authentic mechanical complications for ~$130 to $210 street price
Weaknesses
- Case thickness of 13.8 mm is noticeably tall for a traditional dress/complication timepiece
- Non-standard 21 mm lug width limits aftermarket leather strap experimentation
- Lack of anti-reflective (AR) coating on the domed sapphire crystal creates reflections in bright glare
- Big date numerals lack high contrast against the dark dial base in low ambient light
- Automatic winding rotor action can produce audible mechanical spin in quiet rooms
Research scores, 0 to 10
| Execution and feel in the hand | 7.0 |
|---|---|
| Design identity | 7.2 |
| Value at a realistic price | 8.8 |
| Long-term ownership | 5.5 |
| Movement and engineering | 6.5 |
| Wearability and proportions | 6.2 |
| Versatility and durability | 5.0 |
| Fit with Holden's collection | 7.5 |
Also on Holden’s list
Other complication watches on his list.
Sources
- Sugess Watch MoonPhase Master SU2528STRB V3 sugessofficial.com · read September 16, 2026
- Sugess Moonphase S401 Review - The True 29.5 Day Lunar Cycle On A Budget timedreviews.com · read September 16, 2026
- Sugess 401B Moonphase Watch Review shinythingsreviews.com · read September 16, 2026
Personal research, not a source of truth. Spotted an error? Email a correction.