The Casio AQF-102W-1BVDF (widely known as the AQF-102W-1BV) is a feature-packed Japanese quartz analog-digital sports and outdoor timepiece engineered for travelers, runners, and active field enthusiasts. Part of Casio's specialized OutGear and Active Dial lineups, this model bridges the gap between classic analog hand timekeeping and advanced digital sensor utility. Across international watch collector circles and outdoor gear forums, it has earned defining community nicknames—the "OutGear Thermometer Watch", "Active Dial Thermo-Chrono", "Casio Sensor Sports 102", or simply the "AQF-102W Black". It earns these names for its integrated ambient thermometer sensor, dual stopwatch lap-memory modes, and rugged resin-and-steel hybrid armor. It unites a lightweight resin case measuring 43.0mm in width (with a 44.2mm height and a 14.1mm profile thickness) with a high-contrast analog-digital face, scratch-resistant mineral crystal glass, an in-house Japanese multi-function quartz engine, and an integrated durable black resin strap. Weighing an ultra-light 43.0 grams, it is meticulously calibrated for runners, hikers, and everyday adventurers who demand practical environmental data on their wrist.

The defining visual centerpiece of this AQF-102W-1BVDF reference is its Analog-Digital Hybrid Dial and Built-In Thermometer Display. The dial features central analog hour and minute hands paired with a crisp digital LCD screen that handles secondary time zones, calendar data, and real-time temperature tracking. A dedicated temperature tendency graph provides quick visual feedback on atmospheric shifts. Turning the watch over reveals a solid stainless steel screw-caseback stamped with Casio Module 4738 specifications and water-resistance markers.

Beneath its rugged exterior, the watch is driven by Casio’s advanced in-house Japanese Module 4738 quartz engine powered by dual SR927W silver oxide batteries. Engineered for high-performance outdoor tracking, the movement delivers an estimated 3 years of continuous battery life under normal operation conditions with an accuracy tolerance of ±30 seconds per month.

The case is engineered with ergonomic, sport-optimized proportions, measuring an official 44.2mm in height, 43.0mm in case width (diameter), a durable profile thickness of 14.1mm, and a total weight of 43.0 grams. Dial protection is provided by scratch-resistant spherical mineral crystal glass. Engineered for active wear, the case secures a professional 10-bar (100 meters / 330 ft) water resistance rating, making it completely safe for swimming, snorkeling, and recreational water sports. The watch comes fitted with a flexible black resin strap fastened with a secure buckle clasp.

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