Casio’s official specifications show the EFR-S108D-2AV and EFR-S108D-2BV share the same core hardware: a 7.8 mm stainless-steel case, sapphire crystal with anti-reflective coating, 100-meter water-resistance rating and three-hand analog display with a date. The reviewed pages do not establish a functional difference or fully identify the dial-color distinction in text, so the choice comes down chiefly to which variant’s appearance you prefer. Casio US listed the 2AV at $170 when checked on October 7, 2026; that is a market-specific displayed price, not a guarantee of current price or stock.
What the model numbers tell you—and what they don’t
These are two variants in Casio’s EDIFICE SLIM EFR-S108D family. Casio’s product pages for the 2AV and 2BV list matching core specifications. They do not fully describe the difference in dial color in text, so this comparison cannot reliably name which dial is which. Check current product images or a retailer’s exact-variant listing before choosing based on color.
The word “Hands-On” should not be read as a claim of personal wear testing: the available product information is manufacturer-published, not an independent examination of either watch.
EFR-S108D-2AV and 2BV specifications
| Specification | EFR-S108D-2AV | EFR-S108D-2BV |
|---|---|---|
| Price | Casio US displayed $170 on October 7, 2026; price and availability may change. | Not stated on the reviewed Casio US page; no comparable US price established. |
| Case dimensions | 44.8 × 39.9 × 7.8 mm (Casio specification) | 44.8 × 39.9 × 7.8 mm (Casio specification) |
| Weight | 110 g (Casio specification) | 110 g (Casio specification) |
| Case and bezel | Stainless steel | Stainless steel |
| Band and clasp | Stainless-steel band; one-touch 3-fold clasp | Stainless-steel band; one-touch 3-fold clasp |
| Crystal | Sapphire with anti-reflective coating | Sapphire with anti-reflective coating |
| Water resistance | 100 meters (Casio rating) | 100 meters (Casio rating) |
| Display and functions | Three-hand analog; date display | Three-hand analog; date display |
| Accuracy | ±20 seconds per month (Casio specification) | ±20 seconds per month (Casio specification) |
| Battery | SR916SW; approximately three years (Casio estimate) | SR916SW; approximately three years (Casio estimate) |
| Dial distinction | Not fully described in text on the reviewed official page | Not fully described in text on the reviewed official page |
Specifications are manufacturer claims, not independent test results. Casio Singapore’s November 3, 2023 announcement described three new dial colors for the EFR-S108 series, but does not, in the material reviewed, map those colors to these two exact suffixes.
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- CLASSIC STYLE: This stunning watch showcases our wear-everywhere Carlie Mini Fossil watch featuring a redesigned 90s-inspired T-bar and silver-tone stainless steel mesh band, complete with a mother-of-pearl dial
- CASE & MOVEMENT: Mini case, 12mm band width, mineral crystal, quartz movement with 3-hand analog display, imported silver watch for women
- DIAL: One of many Fossil watches for women, this watch features a round silver stainless steel case, with a mother-of-pearl dial and silver accents
- BRACELET WATCH BAND: Silver, durable stainless steel mesh band with a secure self-adjustable sliding closure for a customized fit; interchangeable with all 12mm Fossil straps
- WATER RESISTANT WOMEN'S WATCHES: Up to 50m (165ft): Wearable while swimming in shallow water; 5 ATM.
What the slim case and materials mean in practice
7.8 mm thickness
At 7.8 mm thick, the case has a low profile on paper and is less bulky than a thicker case under a shirt cuff. Case thickness alone does not determine how a watch wears: the 39.9 mm width, 44.8 mm length, bracelet fit and wrist shape also matter. If fit is important, compare the dimensions with a watch you already wear or try the exact model on.
Steel bracelet and 110 g weight
The stainless-steel case and bracelet give the watch a matching metal construction, while the listed weight is 110 g. That is a useful point of comparison if you prefer a bracelet to a strap, but the specification does not establish how comfortable the watch will feel on a particular wrist. The one-touch three-fold clasp is Casio’s listed fastening system.
Rank #2
- Ultra‑thin lightweight wearing experience: fitted with a 41 mm dial, 8.4‑mm slim case and 20‑mm stainless‑steel mesh strap, the fine‑mesh design delivers great air flow and premium metallic‑strap comfort. It avoids wrist burden and snagged shirt cuffs, ideal for long‑hour office shifts, commuting and daily wear to keep your wrist relaxed
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Sapphire crystal and anti-reflective coating
Casio lists sapphire crystal with an anti-reflective coating on both variants. Those are useful material details to compare when evaluating a watch face, but the specification is not a guarantee against damage or a claim of tested scratch performance.
100-meter water resistance
Casio rates both models at 100 meters. This is the manufacturer’s stated rating; it is not a report of independent testing, and the number alone should not be treated as a promise of performance in every water activity. Follow Casio’s guidance for use and care, particularly around operating the watch in water.
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- STYLE: This Michael Kors Slim Runway mens watch features a black sunray dial, three-hand movement and black stainless steel bracelet
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- PRECISION TIMEKEEPING: A men's watch with Quartz movement and three-hand analog display; imported
- SWIM-READY Water Resistant: This wrist watch for men is wearable while swimming in shallow water up to 50m (165ft); 5 ATM
Which variant should you choose?
- Choose by dial appearance: The reviewed official text does not conclusively identify the 2AV-versus-2BV color difference. Verify the exact suffix on the product page or listing and inspect the dial image rather than relying on a color label attached to a different variant.
- Compare price in your market: Casio US displayed $170 for the 2AV on October 7, 2026. A comparable US price for the 2BV was not established, so check the current price and availability for both before buying.
- Do not pay for a supposed spec upgrade without evidence: The reviewed official pages support no difference in their listed core specifications. Neither variant is shown here to have a better movement, greater water resistance or different crystal.
Casio’s official pages are the appropriate place to verify the exact suffix and current manufacturer details: EFR-S108D-2AV (Casio US), EFR-S108D-2AV (Casio International), and EFR-S108D-2BV (Casio Europe). Casio Singapore’s November 3, 2023 EFR-S108 announcement provides series-level context about the dial colors.
Quick Recap
Best Value
- Brushed stainless steel watch featuring sunray dial with blue second hand, luminous hour and minute hands, and small date window
- 42 mm stainless steel case with mineral dial window
- Japanese quartz movement with analog display
- Silver-tone band with fold-over clasp closure
- Water resistant to 30 m (99 ft)
Rank #4
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