CASIO EDIFICE EQB-1300D-5ADF SMARTPHONE LINK TOUGH SOLAR BROWN DIAL STAINLESS STEEL WATCH

The EQB-1300D-5ADF is the flagship EDIFICE — the top of the range where everything Casio has learned about slim case engineering, solar power, and smartphone connectivity comes together in one watch. At just 9.5 mm thick with a 39.5 mm dial, it packs Tough Solar charging, Bluetooth smartphone link with auto time adjustment, a sapphire crystal with anti-reflective coating, and a solid stainless steel H-link bracelet into a case slimmer than most basic quartz dress watches. The silver stainless steel case and bracelet provide a classic, refined foundation, and the brown metallic dial — textured to evoke the interior of a high-end automobile — provides a warm, earthy focal point framed by the machine-finished bezel — evoking the leather-trimmed interior of a grand tourer.

Module 5758 handles the Tough Solar and Bluetooth integration: the solar cell generates power from sunlight and indoor lighting, eliminating battery changes entirely. Bluetooth connects to the CASIO WATCHES app for automatic time adjustment, Phone Finder, and Time & Place logging. The analog display features three hands (hour, minute moving every 10 seconds, second) with two sub-dials (24-hour and day indicator), plus a date display. A 1-second chronograph with 30-minute capacity covers basic timing needs. Power Saving mode stops the hands in the dark to conserve energy — approximately 5 months of runtime without light exposure, extending to 18 months in full power save. Sapphire crystal with anti-reflective coating, 100-metre water resistance. 46.5 × 39.5 × 9.5 mm, 129 grams.

At a Glance

Why You'll Love It

• 9.5 mm thin. That number defines the EQB-1300 — it's the engineering achievement the entire watch is built around. Fitting Tough Solar, Bluetooth, a sapphire crystal, and a chronograph into a case thinner than most basic three-hand quartz watches is remarkable. For comparison, the EFV-160D is 10 mm, the EFK-200 automatics are 11.9 mm, and the ERA-130D is 14.4 mm. The EQB-1300 is the slimmest EDIFICE — and one of the slimmest solar-Bluetooth watches in any brand's lineup. It sits on the wrist like a dress watch, not a gadget.
• Tough Solar eliminates battery changes permanently. The solar cell beneath the dial generates power from any light source — direct sunlight, office fluorescents, even dim indoor lighting. Approximately 5 months of runtime in the dark without any light exposure, extending to 18 months with the Power Saving function engaged. You'll never need to open this watch for a battery replacement.
• Bluetooth smartphone link via the CASIO WATCHES app delivers automatic time adjustment — the watch syncs to your phone's network time, keeping accuracy far beyond the ±15 seconds per month quartz spec. Phone Finder makes your phone ring from the watch when you've misplaced it. Time & Place logs your location and local time. All managed from the app without manual crown adjustments.
• The silver stainless steel case and band give the DC variant a darker, more assertive tone than the silver EQB-1300D models. Silver SS on stainless steel is more discreet than silver but bolder than black — it sits in the sophisticated middle ground. The brown metallic dial creates a striking colour contrast against the silver SS frame: warm green against cool gray, with metallic textures that shift as light plays across the surface.
• The solid stainless steel H-link bracelet is crafted with short link spacing for a fluid, comfortable fit that drapes around the wrist rather than sitting stiffly. Hairline and mirror finishes are individually applied to each link form — the same meticulous bracelet construction as the EFK-200 automatics, in polished silver stainless steel. One-touch 3-fold clasp in solid stainless steel.
• Sapphire crystal with anti-reflective coating — the highest-grade glass Casio uses. The AR coating reduces reflections and glare for clear dial readability under direct sunlight and bright overhead lighting. Combined with raised indexes and lustrous metallic dial texturing, the face is readable in all conditions.

Perfect For

Key Features

• Ultra-slim — 9.5 mm thick — The slimmest EDIFICE. Fits Tough Solar, Bluetooth, sapphire crystal, and chronograph in a case thinner than most basic quartz dress watches.
• Tough Solar — no battery changes — Charges from any light source. ~5 months dark runtime, ~18 months with Power Saving. Permanent power.
• Bluetooth smartphone link — CASIO WATCHES app: auto time adjustment, Phone Finder, Time & Place. No manual time setting needed.
• Silver stainless steel case + solid bracelet — Classic, refined tone. H-links with short spacing, hairline + mirror finishing. One-touch 3-fold clasp.
• Sapphire crystal with anti-reflective coating — Scratch-resistant, glare-free. The highest-grade glass in the EDIFICE range.
• 100-metre water resistance (10 BAR) — Suitable for swimming and recreational water activities.

Technical Specifications

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