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The Daniel Gorman RM 55 Tonneau is the five-colour-option steel tonneau automatic in the RM series - the same 42x55mm 316L stainless steel case, Japanese automatic movement, Hardlex crystal, 5 ATM / 50M, and silicone strap as the RM 35 Rafa, with five dial and finish variants: Black, Silver Black, Blue, White, and Rose Black. At 94g it is 5g lighter than the RM 35 Rafa at 99g - a modest but perceptible difference across the same dimensions. The RM 55 Tonneau is the broadest colour range in the RM steel series, adding Blue and Silver Black as variants not found in the Rafa range.
Japanese automatic self-wind. 316L steel tonneau. 42x55mm, 15mm, 5 ATM / 50M, 94g, 5 variants.
Blue is the RM 55 Tonneau's most distinctive colour offering relative to the broader RM steel range - it is not offered in the RM 35 Rafa (steel) and creates an immediately distinctive presentation. Blue tonneau automatics are uncommon; the combination of the 42x55mm case geometry and the blue dial treatment reads as both dynamic and considered. Under incandescent light the blue deepens; in daylight it is crisp and graphic against the steel case.
Silver Black is a two-tone specification: silver case treatment combined with a black dial. The high contrast between the light case and dark dial is the defining characteristic - the hands and any dial markings are maximally legible against the black dial, while the silver case provides a neutral surrounding metal. Silver Black is the most conventionally sport-watch-adjacent colour combination in the RM 55 range.
Black: the most intense and focused tonneau variant - the near-monochromatic dark presentation. White: highest contrast within the light-tone range, graphic and clean. Rose Black: warm-tone case against dark dial, the most distinctively warm variant. These three appear in both the RM 35 Rafa and RM 55 Tonneau ranges; the key differences between models when choosing the same colour are weight (94g vs 99g) and the additional Blue and Silver Black options available only in the RM 55.
The RM 55 Tonneau weighs 94g; the RM 35 Rafa weighs 99g. At the same 42x55mm case dimensions and 15mm profile, the 5g difference comes from internal construction differences. Over a full day of wear a 5g difference on a silicone strap is perceptible at the wrist level without being dramatic - the RM 55 is the marginally lighter of the two otherwise equivalent designs.
The RM 55 Tonneau offers the widest colour range in the Daniel Gorman RM steel automatic series at Wclocks. Black, Silver Black, Blue, White, and Rose Black cover the full spectrum from the most assertive (Black) through the most distinctive (Blue, Rose Black) to the most graphic (White) and the most contrast-focused (Silver Black). Choosing between the RM 55 Tonneau and the RM 35 Rafa for the shared variants (Black, White, Rose Black) comes down to weight (94g vs 99g) and the additional colour options: the RM 55 adds Blue and Silver Black that are not available in the Rafa; the Rafa adds Silver that is not available in the RM 55. For someone who wants Blue, the RM 55 Tonneau is the only option in the RM steel range. For someone who wants Silver, the Rafa is the only option. For Black, White, and Rose Black, the weight comparison (94g vs 99g) is the deciding factor - 5g across the same case dimensions and identical specifications.
Available in Black, Silver Black, Blue, White, Rose Black. Backed by Wclocks 1-year warranty.
The RM 55 Tonneau in five colours covers active daily wear, sport, and bold casual occasions.
Blue is the exclusive colour option in the RM 55 Tonneau steel range - not available in any other RM steel automatic at Wclocks. For the buyer who specifically wants a blue-dial tonneau automatic, the RM 55 Tonneau is the direct choice. Blue reads well in daylight outdoor contexts and in navy or blue wardrobe pairings.
5 ATM / 50M and silicone strap make the RM 55 Tonneau appropriate for active daily wear including swimming. All five colour variants on the same 25mm silicone strap with buckle clasp. Black is the most versatile for sport contexts; Blue adds visual identity during active wear.
Silver Black is the highest-contrast pairing in the RM 55 range - light case, dark dial, maximum legibility. For sport and active contexts where quick time reading matters, Silver Black provides the clearest hands-against-dial contrast of the five variants.
Five colour variants means the RM 55 Tonneau accommodates a wider range of recipient tastes than the four-variant Rafa. As a gift where the colour choice matters - where the recipient has a specific preference - the RM 55 adds Blue and Silver Black as options that the Rafa does not offer.
Browse the full RM series and tonneau automatic range at Wclocks.
RM 55 Tonneau - 42x55mm, 15mm, Japanese automatic, Hardlex, 316L stainless steel, silicone strap, 5 ATM / 50M, 94g, 1-year Wclocks warranty. Black, Silver Black, Blue, White, Rose Black.
| Case Diameter | 42 mm |
| Case Material | Stainless Steel |
| Crystal | Sapphire-coated mineral crystal |
| Movement | Automatic (self-winding) |
| Functions | Hours, minutes, seconds, date |
| Case Shape | Tonneau (barrel) |
| Water Resistance | 5 ATM / 50 m |
| Strap | Genuine leather strap |
| Warranty | 2 years — Wclocks |
Every Wclocks watch includes warranty support for added confidence, covering key performance and manufacturing-related issues under normal use.
All Wclocks watches include a warranty of up to 2 years, depending on the specific model.
This warranty covers the watch movement and manufacturing defects under normal use.
If an issue occurs during the warranty period, we will provide replacement parts or a suitable solution when necessary.
If your item arrives damaged or defective, please contact us within 14 days of delivery with photos so our team can assist you promptly.
Warranty coverage applies to the movement and manufacturing defects under normal use. Damage caused by misuse, improper handling, external impact or normal wear may not be covered.
Every Wclocks watch is carefully prepared, packed and shipped with tracking, so your order can arrive safely and securely.
Orders are processed within 1–5 business days. Once your watch has shipped, you will receive a tracking number by email.
Delivery usually takes 7–14 business days, depending on your location, the carrier, customs processing and local delivery conditions.
All Wclocks watches are carefully packaged for safe delivery, helping protect the watch case, bracelet, crystal and presentation box during transit.
Return requests must be made within 14 days of delivery. Items must be unused, undamaged and returned in their original packaging.
If your item arrives damaged, defective, incorrect, or with missing parts, please contact us with photos of the item and packaging so we can review the case and arrange the best solution.
All sales are generally final. However, if you experience an issue with your order, please contact us and we will review your request case by case. Return shipping costs are the responsibility of the customer, and a restocking fee of up to 20% may apply.
