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Casio’s limited-edition Oceanus Manta OCW-SG1000MC-1AJR pairs a titanium case and bracelet with a black-and-white marble ceramic bezel whose pattern varies from watch to watch. Casio announced a Japanese suggested retail price of ¥748,000 including tax, a November 13, 2026 launch in Japan, and a production run of 300 pieces. The launch date is still in the future as of October 7, 2026.
What makes the OCW-SG1000MC distinctive?
Casio calls the design theme “Ocean Surge.” Its centerpiece is a ceramic bezel made by mixing black and white ceramic, molding the mixture, then sintering, cutting and polishing it. The resulting marble pattern differs from piece to piece; Casio describes blue-green glints where the two colors meet. The bezel has 24 facets and a curved top surface. The dial is glossy black ceramic, while an engraved spiral on the caseback is intended to evoke a swell or current. Casio’s October 6, 2026 announcement describes the variation as a result of the material and manufacturing process, not individual hand-painting.
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Casio says ceramic offers high scratch resistance and that DLC surface treatment helps protect the titanium exterior. Those are manufacturer descriptions, not a guarantee that the watch is scratch-proof; no independent durability testing is established here.
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| Detail | Casio’s announced terms |
|---|---|
| Japanese suggested retail price | ¥748,000, including tax |
| Japanese release date | November 13, 2026 |
| Production quantity | 300 pieces; the product page describes the model as world-limited and serial-numbered |
These are Casio’s Japan launch terms. The announcement and product page do not establish a price or release schedule for other markets, current retailer stock, or an Amazon listing. Casio identifies the watch as a CASIO WATCH Partner Shop model. See the official Japanese product page for the model listing.
#1 Best Overall
- 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)
How it compares with the previous SG1000 limited edition
The most direct comparison is the 2025 OCW-SG1000CN Manta, which used an Edo Kiriko-cut sapphire bezel. Casio’s October 7, 2025 announcement listed it at ¥682,000 including tax in Japan, with 600 pieces and a November 14, 2025 release. The 2026 marble-ceramic model’s Japanese launch price is ¥66,000 higher, and its announced run is half the size. Those launch figures do not establish present-day availability, resale value or relative demand.
| Model | Bezel | Japanese launch price, including tax | Announced quantity | Announced release |
|---|---|---|---|---|
| OCW-SG1000MC-1AJR (2026) | Variable black-and-white marble ceramic | ¥748,000 | 300 | November 13, 2026 |
| OCW-SG1000CN (2025) | Edo Kiriko-cut sapphire | ¥682,000 | 600 | November 14, 2025 |
The earlier model’s figures are from Casio’s October 7, 2025 announcement. The practical distinction is the bezel material and finish: ceramic with a variable marble effect here, versus cut sapphire on the predecessor.
Rank #2
- MULTIFUNCTIONAL CALCULATOR: Leave your phone in your pocket. Features an 8-digit calculator, multilingual Databank, and 25-page Telememo to store contacts. Keep your vital information organized and instantly accessible right on your wrist.
- DUAL TIME & MULTIPLE ALARMS: Never miss an appointment. Track two time zones at once with dual time mode. Features 5 daily alarms and an hourly signal to provide reliable reminders for all your events and tasks throughout the day.
- 1/100-SECOND STOPWATCH & AUTO LED LIGHT: Time your activities flawlessly. Use the 1/100-second stop watch for precise elapsed, split, and 1st-2nd place tracking. Simply tilt your wrist to activate the Auto LED light for instant nighttime visibility.
- STAINLESS STEEL BAND & WATER RESISTANCE: Enjoy all-day comfort and durability. The adjustable silver stainless steel band features a secure clasp for a perfect fit, while the splash-resistant design protects against daily moisture exposure.
- LONG BATTERY LIFE & ACCURACY: Enjoy reliable timekeeping with minimal maintenance. The 5-year battery ensures extended use, while ±15 seconds per month accuracy keeps you perfectly on time for work, school, or casual daily wear.
Specifications and timekeeping features
| Specification | OCW-SG1000MC-1AJR |
|---|---|
| Case dimensions | 47.5 × 43 × 11.7 mm |
| Weight | 100 g |
| Case and bracelet | Titanium case and solid-link titanium bracelet with DLC surface treatment |
| Bezel and dial | Ceramic bezel and glossy black ceramic dial |
| Crystal | Sapphire crystal with anti-reflective coating on both sides |
| Water resistance | 10 bar |
| Power | Gallium Tough Solar |
| Time adjustment | Multiband 6 radio reception and Bluetooth smartphone time adjustment |
| Operating time after full charge | About five months under normal function use without further solar generation, or about 18 months in power-saving state; manufacturer specifications, not independent tests |
Casio says the solar cell receives light through a narrow opening around the date wheel. Multiband 6 reception is specified for Japan, North America, Europe and China. The CASIO WATCHES app lists world time for about 300 cities; the watch itself lists 27 cities and 38 time zones. These details and the specifications above are listed on Casio’s product page. The 10-bar rating is a stated water-resistance specification, not a blanket claim of suitability for every water sport.
Quick Recap
Best Value
- Multifunction watch featuring LED light, world time (30 cities), 1/100 second stopwatch, and countdown timer
- Additional functions include three daily alarms, hourly time signal, auto calendar, 12- and 24- hour formats,40 mm stainless steel case with mineral dial window
- Quartz movement with analog-digital display
- Canvas band with hook-and-loop closure
- Water resistant to 50 m (165 ft): In general, suitable for short periods of recreational swimming, but not diving or snorkeling
Rank #4
- Dual Time, Daily Alarm
- 1/100 second digital stopwatch (Measuring capacity: 59'59.99", Measuring modes: Elapsed time)
- Hourly Time Signal, Auto Calendar, 12/24 Hour Formats
- Accuracy: +/-30 seconds per month, Battery SR920W,Approx. battery life: 3 years
- Module 3321, Water Resistant - 30M, Self-Adjustable Metal Band
Rank #3
- Water Resistant, LED light
- Stopwatch, Daily alarm, Hourly time signal
- Calendar, 12/24-hour format
- Approx. battery life: 7 years on CR2016
- Case diameter: 30.0 millimeters
What to know before looking for one
- Use the full reference, OCW-SG1000MC-1AJR, when checking listings; OCW-SG1000MC is the shorter model name used in the announcement.
- The 300-piece figure is Casio’s announced production quantity, not a promise that every authorized retailer will receive stock.
- The Japanese price is a tax-included suggested retail price. No official international price is established by the cited launch materials.
- Casio’s announced Japanese release date is November 13, 2026; the watch should not be described as already on sale as of October 7, 2026.
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.
