The Blancpain Fifty Fathoms Grande Date reference 5050-12B30-B52A pairs a 45 mm satin-finished titanium case with a large date displayed in two windows at six o’clock. Its defining distinction is that date layout; inside, it retains Blancpain’s self-winding calibre 1315, with three mainspring barrels and a stated five-day power reserve. Blancpain introduced the model at Baselworld 2018.
What is the Fifty Fathoms Grande Date 5050?
Blancpain identifies the watch as the Fifty Fathoms Grande Date, reference 5050-12B30-B52A, in its Baselworld 2018 launch document. It is a Fifty Fathoms diver with a prominent two-window date at six o’clock, rather than the date placement near four o’clock used on earlier modern Fifty Fathoms models, according to Blancpain.
The name “Grande Date” describes that large-date display. Blancpain characterized it as the first time its instant-change large-date complication had been brought to the Fifty Fathoms collection. That is the manufacturer’s own collection-history claim.
How does the large date work?
Two adjacent windows at six o’clock show the date. Blancpain says the indication changes instantly at midnight and is adjusted using the crown. The two-window arrangement gives the date its distinctive visual emphasis while keeping it centered at the bottom of the dial.
The Tool Desk
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- Stainless Steel case with Black Resin Band
- Black Dial with date window at 3 O'clock
- Luminous markers and hour hands; sweep second hand
- Anti-reverse bezel
- Water-resistant to 200 M (660 feet)
Case, dial and bezel
The case measures 45 mm across and is satin-finished titanium, according to Blancpain’s 2018 specifications. The technical data identifies a black dial and a unidirectional sapphire bezel; Blancpain describes its domed sapphire insert as scratch resistant. A sapphire display back exposes the movement.
The 45 mm diameter is a substantial case size on paper. The available manufacturer specifications establish the diameter but do not establish how it wears on a particular wrist; no fit or comfort conclusion should be inferred from the number alone.
Rank #2
- 330 ft. (100 M) water resistance. In general, suitable for recreational surfing, swimming, snorkeling, sailing and water sports.
- 12/24-hour timekeeping, 43 mm resin case with mineral dial window, Japanese quartz movement; Analog: 3 hands (hour, minute, second)
- Case / bezel material: Resin; Rotating bezel
- Day and date display at 3 o’clock
- Analog display, molded resin band with buckle closure; Accuracy: ±20 seconds per month
Calibre 1315 and power reserve
The watch uses Blancpain’s self-winding calibre 1315. The 2018 launch document specifies three mainspring barrels and a five-day power reserve. Blancpain also says the silicon hairspring protects against magnetic fields without requiring an inner soft-iron case. That construction lets the brand pair the stated magnetic protection with a sapphire display back.
Launch strap options and what is not established
Blancpain’s launch material offered the reference on either a sail-canvas strap or a NATO strap. The material available for this model does not establish lug width, compatibility with aftermarket straps, or current replacement-strap availability, so those details should be confirmed before buying a substitute.
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- DIVER-INSPIRED DESIGN — Inspired by the sea, the MDV-106G is styled after classic dive watches and delivers 200-meter water resistance at an unbeatable price point. The black resin band and stainless steel case give it a classic look, while the anti-reverse rotary bezel adds authentic dive-watch character.
- STAINLESS STEEL CASE WITH SCREW-LOCK CROWN & CASEBACK — The MDV-106G features a stainless steel case and a reliable screw-lock crown for enhanced water resistance protection. Screw-down crown and screw-lock caseback work together to keep the movement sealed and secure during water activities — a construction standard found on dive watches far above this price range.
- LARGE FLUORESCENT HANDS & INDICES FOR INSTANT READABILITY — The dial features hands and hour indices with large fluorescent areas for easy reading in low-light and underwater conditions. The clean 3-hand analog layout with date display at 3 o'clock keeps the dial uncluttered and immediately legible at a glance.
- 44MM STAINLESS STEEL CASE | 22MM LUG WIDTH | MINERAL GLASS — The case measures 44mm in diameter, 12mm in height, with a 49mm lug-to-lug length and a standard 22mm lug width — making strap upgrades effortless with a vast range of aftermarket options. Mineral glass protects the dial from everyday scratches and impacts.
- 3-YEAR BATTERY & 200M WATER RESISTANCE — Powered by an SR626SW battery with an approximate 3-year life, the case measures 49.5 × 46.3 × 12.1mm and weighs 92 grams. At 200 meters of water resistance, the Duro is versatile and suitable for all situations — whether in the water, hiking, running, or at the office.
What the specifications tell you—and what they do not
- Distinctive complication: the two-window instant-change date at six o’clock is the model’s clearest point of difference within the modern Fifty Fathoms family described by Blancpain.
- Movement architecture: calibre 1315, three barrels and a five-day stated reserve give the watch a substantial reserve specification, though that figure is Blancpain’s rating rather than a measurement of any individual example.
- Materials and display: titanium case, sapphire bezel insert and display back define the documented construction; the sources do not establish a comparative scratch-resistance or durability result.
- Buying context: the launch documentation dates to 2018. Current price, production status, stock and retailer availability are not established by these specifications, so they require confirmation from Blancpain or an authorized retailer.
Independent coverage includes a Monochrome Watches hands-on review and a retailer-produced The 1916 Company review video, published November 4, 2024. Their existence offers additional perspectives, but does not establish a current price or availability.
Quick Recap
Best Value
- DURABLE STAINLESS STEEL CASE WITH ROTATING BEZEL: The Casio MDV106 Series features a stainless steel case and screw-down crown, ensuring durability and reliability. The rotating bezel allows for easy time tracking, making it a practical choice for various activities. The sleek analog display with luminous markers enhances visibility.
- 200M WATER RESISTANCE FOR VERSATILE USE: Designed for water resistance up to 200 meters (660 feet), this watch is suitable for daily wear, outdoor activities, and water-related environments. The screw-down caseback and crown provide an extra layer of security, making this a reliable timepiece for various conditions.
- CLEAR ANALOG DISPLAY WITH DATE FUNCTION: The three-hand analog display with hour, minute, and second hands ensures precise timekeeping, while the date display at the 3 o’clock position allows for quick reference. The bold markers and luminous hands enhance readability, making it easy to check the time in various lighting conditions.
- STAINLESS STEEL BAND WITH SECURE CLASP: The stainless steel band with a one-touch 3-fold clasp provides a secure and adjustable fit for all-day comfort. Designed for durability, the stainless steel material offers a polished, stylish look, making it suitable for both casual and professional settings.
Rank #4
- DIVER-INSPIRED DESIGN — Inspired by the sea, the MDV-106B is styled after classic dive watches and delivers 200-meter water resistance at an unbeatable price point. The black resin band and stainless steel case give it a classic look, while the anti-reverse rotary bezel adds authentic dive-watch character.
- STAINLESS STEEL CASE WITH SCREW-LOCK CROWN & CASEBACK — The MDV-106B features a stainless steel case and a reliable screw-lock crown for enhanced water resistance protection. Screw-down crown and screw-lock caseback work together to keep the movement sealed and secure during water activities — a construction standard found on dive watches far above this price range.
- LARGE FLUORESCENT HANDS & INDICES FOR INSTANT READABILITY — The dial features hands and hour indices with large fluorescent areas for easy reading in low-light and underwater conditions. The clean 3-hand analog layout with date display at 3 o'clock keeps the dial uncluttered and immediately legible at a glance.
- 44MM STAINLESS STEEL CASE | 22MM LUG WIDTH | MINERAL GLASS — The case measures 44mm in diameter, 12mm in height, with a 49mm lug-to-lug length and a standard 22mm lug width — making strap upgrades effortless with a vast range of aftermarket options. Mineral glass protects the dial from everyday scratches and impacts.
- 3-YEAR BATTERY & 200M WATER RESISTANCE — Powered by an SR626SW battery with an approximate 3-year life, the case measures 49.5 × 46.3 × 12.1mm and weighs 92 grams. At 200 meters of water resistance, the Duro is versatile and suitable for all situations — whether in the water, hiking, running, or at the office.
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