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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →The Sinn T50 Goldbronze is a 500-meter dive watch in Sinn’s proprietary Goldbronze 125 alloy, but the name covers two distinct versions. Fratello’s hands-on article concerns the original grey-dial reference 1052.061; Sinn’s product page currently presents the blue-dial T50 GOLDBRONZE B, reference 1052.062. The distinctions matter if you are comparing specifications or looking for one to buy.
Two references, two dials
The original T50 Goldbronze, reference 1052.061, has a grey dial with decorative grinding, described by Fratello as “Dekorschliff.” Sinn’s currently presented T50 GOLDBRONZE B is reference 1052.062 and has a dark blue dial. Both are described as limited to 300 pieces, but current inventory for either reference is not established.
Lex Stolk’s Fratello article is a first-person account of the original 1052.061. Its observations about the watch’s appearance and appeal are subjective impressions, not independent testing of the blue-dial B. The specifications below for the B are those Sinn lists on its product page.
| Detail | T50 Goldbronze 1052.061 | T50 GOLDBRONZE B 1052.062 |
|---|---|---|
| Dial | Grey decorative-grinding dial, per Fratello | Dark blue, per Sinn |
| Case diameter | 41 mm, per Fratello | 41 mm, per Sinn |
| Thickness | 12.3 mm, per Fratello | 12.3 mm, per Sinn |
| Power reserve | 56 hours, as reported by Fratello in 2023 | Not stated on Sinn’s product page |
| Price | €4,980 in Fratello’s historical article; not a current quote | €4,980 including tax on Sinn’s page when accessed in 2026; volatile |
Sources: Fratello on the original reference 1052.061 and Sinn’s T50 GOLDBRONZE B product page.
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- Material: CUSN8 bronze case, bezel, stainless steel case back, synthetic sapphire crystal, suede leather band, stainless steel buckle
What Goldbronze 125 is—and what Sinn says about aging
Sinn describes Goldbronze 125 as its own developed and patented alloy of copper, tin, and gold. For this watch, the company says the alloy contains one-eighth gold. Sinn says the alloy oxidizes more slowly than conventional bronze and that its high purity improves skin compatibility and seawater corrosion resistance. These are manufacturer claims; the cited product information does not provide an independent materials study.
Bronze can develop a darker surface as it reacts with its environment. Sinn says light oxidation on this alloy can be removed with the special Goldbronze cloth supplied with the watch. That describes the manufacturer’s stated care method, not a guarantee that the case will retain a particular color or that every wearer will experience the alloy identically.
Rank #2
- NH35A Movement: Powered by Japanese NH35A movement, 21,600 bph, stop-seconds function, bi-directional automatic winding, 24 jewels, 41-hour power reserve, ensuring accuracy and durability for daily use
- Vintage Design: Inspired by iconic dive watches from the 1970s, this This timepiece features a durable CUSN8 solid bronze case, black dial and ceramic bezel, with a combination of brushed and polished finishes for a timeless look
- Sapphire Crystal & BGW9 Super Lume: Scratch-resistant flat sapphire crystal with AR coating, BGW9 Super Lume on indices, hands, and bezel for clear readability in all conditions
- Watch Dimensions: Case diameter 43.8 mm, bezel diameter 41.5 mm, lug to lug length 46.8 mm, case thickness 13.5 mm, crown diameter 7 mm, weight 115 g. lugs 20 mm 200 M, fits wrists 7″ to 8.5″
- Waterproof: Rated for 200 m, suitable for handwashing, swimming, and diving, meeting all daily and underwater activity needs. The screw-down crown and unidirectional rotating ceramic bezel with 120 clicks ensure reliable underwater performance
Size, construction, and wearing details
For reference 1052.062, Sinn lists a 41 mm case, 12.3 mm thickness, 20 mm lug width, and 73 g weight without a strap. The case, crown, and bezel are bead-blasted Goldbronze 125. A screw-fastened high-strength titanium case back contacts the wrist; Sinn says it uses titanium there to avoid skin reactions from that surface. This should not be read as a guarantee about allergy outcomes for every wearer or every part of the watch.
The B is supplied with a blue textile strap. Its 20 mm lug width may make other 20 mm straps worth considering, but width alone does not establish compatibility: end shape, spring bars, buckle, and fit preferences also matter. Sinn lists a sapphire crystal with anti-reflective treatment on both sides.
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- NH35A Movement: Powered by Japanese NH35A movement, 21,600 bph, stop-seconds function, bi-directional automatic winding, 24 jewels, 41-hour power reserve, ensuring accuracy and durability for daily use
- Vintage Design: Inspired by iconic dive watches from the 1970s, this This timepiece features a durable CUSN8 solid bronze case and bezel, stainless steel case back, a combination of brushed and polished finishes for a timeless look
- Sapphire Crystal & BGW9 Super Lume: Scratch-resistant flat sapphire crystal with AR coating, BGW9 Super Lume on indices, hands, and bezel for clear readability in all conditions
- Watch Dimensions: Case diameter 43.8 mm, bezel diameter 41.5 mm, lug to lug length 46.8 mm, case thickness 13.5 mm, crown diameter 7 mm, weight 115 g. lugs 20 mm 200 M, fits wrists 7″ to 8.5″
- Waterproof: Rated for 200 m, suitable for handwashing, swimming, and diving, meeting all daily and underwater activity needs. The screw-down crown and unidirectional rotating ceramic bezel with 120 clicks ensure reliable underwater performance
Movement and everyday functions
Sinn specifies a self-winding SW 300-1 movement for the B, with 25 jewels, 28,800 semi-oscillations per hour, a stop-seconds function, and a date. Its product page does not state the B’s power reserve. Fratello reports 56 hours for the original 1052.061, but that figure should not be transferred to the B without confirming the movement and version details.
The crown is positioned at 4 o’clock. Sinn also lists Ar-Dehumidifying Technology and low-pressure resistance. Those are documented features; the available product information does not independently test how they perform in use.
Rank #4
- Premium Bronze Case: Crafted from CUSN8 bronze case and bezel with stainless steel case back. The suede leather band and steel buckle add vintage charm. Each watch develops a unique patina over time, making it truly yours
- Reliable Automatic Movement: Powered by 8215 automatic movement with hacking seconds for precise time setting. Self-winds with wrist motion. If the watch stops upon first wear or after storage, unscrew and wind clockwise 20–25 turns to restart
- Super-Luminous Visibility: Super-bright luminous markers ensure excellent readability in low light or darkness. Great for night dives or evening wear
- 200m Water Resistance: Rated to 200 meters (20 ATM) with screw-down crown. Ready for swimming, snorkeling, and daily water exposure—rain or shine
- Natural Patina Finish: Each bronze case ages uniquely—stains, water spots, and dulling are natural, not flaws. Humidity, saltwater, and body chemistry may accelerate oxidation, adding distinctive verdigris character. Embrace the organic evolution
What the 500-meter dive rating means
Sinn lists water and pressure resistance of 500 m / 50 bar for the B and says the watch was certified by an independent institute. The product page references DIN 8310, DIN 8306, EN 250, and EN 14143, and describes testing against European standards for diving equipment. Sinn does not name the institute on the accessed page, so the certification claim should be attributed to the manufacturer rather than treated as an independently verified test report.
The watch has a captive safety bezel with a guard intended to prevent accidental misadjustment. Sinn’s operating instruction is “Press first, then turn.” The page also specifies color-separated luminous elements: the hour hand and indices glow green, while the minute and second hands and the bezel’s main marker glow blue. These are manufacturer-listed design features, not performance results from an independent test.
Best Value
Price, limited production, and availability
When accessed in 2026, Sinn listed the T50 GOLDBRONZE B 1052.062 at €4,980 including tax, plus applicable shipping. The page showed an estimated Germany delivery time of 5–7 days. Both price and delivery information are location-specific and can change; they do not establish current stock in any market.
Sinn says the B is limited to 300 pieces. Fratello also describes the original 1052.061 as a 300-piece limited edition. Stolk’s 2023 article suggested contacting Sinn to be directed to sales partners that might still have the original, but that is not confirmation of availability today. For either reference, ask Sinn or an authorized sales partner for current stock and the price applicable in your market. Sinn states a three-year worldwide manufacturer warranty against material and manufacturing defects, subject to its exclusions.
Sources: Sinn Spezialuhren, T50 GOLDBRONZE B product page; Fratello Watches, hands-on with reference 1052.061.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
