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Casio’s China site lists two MTP-C666 quartz watches, the MTP-C666-1B and MTP-C666-7B, for ¥390 each. Both are three-hand analog models with mineral glass, a resin band, and an ion-plated case and bezel. Casio’s published specifications do not identify the case’s underlying metal, so “steel case” is not established by the official pages.
What are the MTP-C666 models?
The MTP-C666-1B and MTP-C666-7B are quartz watches listed in Casio China’s February 2026 new-product announcement. The listing also presents the watch in an exam-themed gift set. The official product pages describe each as an analog, three-hand watch.
Casio’s product pages are China-market listings, and their prices are in yuan. They confirm a listing there, not availability in other countries or current stock.
MTP-C666-1B vs. MTP-C666-7B
| Specification | MTP-C666-1B | MTP-C666-7B |
|---|---|---|
| China-listed price | ¥390 | ¥390 |
| Case dimensions | 45 × 38 × 8 mm | 45 × 38 × 8 mm |
| Weight | 42 g | 42 g |
| Case and bezel | Ion plated | Ion plated |
| Band | Resin | Resin |
| Glass | Mineral | Mineral |
| Battery | SR626SW; approximately three years | SR626SW; approximately three years |
| Accuracy | ±20 seconds per month | ±20 seconds per month |
| Band sizing listed by Casio | 145–215 mm | 145–215 mm |
Casio lists the same core specifications and price for both references. Gizmochina’s February 27, 2026 launch report describes the 1B as having a black dial and the 7B a white dial; check Casio’s current product images to confirm the appearance before choosing between them.
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- Precise Japan Quartz Movement - Accuracy: +/- 20 seconds per month
- Stainless Steel Case and Bracelet, Fold Over Deployment Clasp
- Mineral Crystal, Date Display, Luminous Hands and Markers
- Case Size: 43 mm Diameter, 10.5 mm Thickness
- Water Resistant - 50 M
What the specifications mean
Mineral glass and ion plating
The official pages specify mineral glass and an ion-plated case and bezel. They do not name the case’s base metal. The “steel case” wording in the launch report’s headline is not enough to establish stainless steel as an official specification.
Battery life and accuracy
Casio estimates approximately three years of operation from an SR626SW battery and lists accuracy of ±20 seconds per month. These are manufacturer specifications, not a guarantee of the performance or battery life of an individual watch.
Rank #2
- BOLD BLUE SUNBURST DIAL WITH DIVER-INSPIRED AESTHETICS — The MTP-VD01D-2BV features a sporty design with a robust silver-tone case and a captivating blue dial — the sunburst finish catches light dynamically throughout the day, shifting from deep navy to vibrant blue depending on the angle. Large luminous Arabic numerals and bold hour markers deliver instant legibility whether indoors or out.
- FULL STAINLESS STEEL — CASE & BRACELET — The silver-tone stainless steel case and matching stainless steel band with fold-over clasp give the MTP-VD01D-2BV a solid, premium-feeling build that sits well above its price point on the wrist. Case dimensions are 48 × 42 × 10.7mm — a mid-to-large footprint with a slim profile that transitions from casual to smart-casual wear with ease.
- DATE DISPLAY | 3-HAND ANALOG | ±20 SEC ACCURACY — Features a date display and stainless steel band. Three hands — hour, minute, and second — with accuracy of ±20 seconds per month, tighter than the ±30 seconds typical of most entry-level analog watches. The clean dial layout keeps time reading simple and immediate at a glance.
- 50M WATER RESISTANT — BUILT FOR DAILY WEAR — Water resistant to 50 meters — suitable for everyday water exposure, hand washing, splashing, and swimming in shallow water. A practical, real-world level of protection for an everyday dress-sport watch at an accessible price point.
- SR626SW 3-YEAR BATTERY | MINERAL GLASS | FOLD-OVER CLASP — Powered by an SR626SW battery with an approximate 3-year life, the MTP-VD01D-2BV requires minimal maintenance for years of reliable daily use. Mineral glass protects the blue dial from everyday scratches. Available in Blue (MTP-VD01D-2BV), Black (MTP-VD01D-1BV), White (MTP-VD01D-7EV), and Gold-tone (MTP-VD01G-1BV) variants.
Size and band fit
The watches measure 45 × 38 × 8 mm and weigh 42 g, according to Casio. The listed band sizing compatibility is 145–215 mm. That range does not establish compatibility with a particular replacement strap.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price and regional availability
Casio China lists each model at ¥390. Treat that as the price shown in the China-market listing, not a guaranteed current price or a price in another country. The official pages reviewed establish listings in China only. Gizmochina reported that a US or EU launch was not expected, but that is the outlet’s expectation rather than a formal Casio announcement or proof of present-day availability.
Quick Recap
Sources
- Casio China’s February 2026 new-products listing
- Casio China MTP-C666-1B product page
- Casio China MTP-C666-7B product page
- Gizmochina’s February 27, 2026 launch report
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.
