Citizen Men’s Eco-Drive Corso Diamond Bezel Watch, Two-Tone

Product Overview

The Citizen Men’s Eco-Drive Corso Diamond Bezel Watch combines timeless elegance with innovative technology, making it a refined choice for the modern man. As the latest addition to the Corso collection, this watch blends classic design elements with sustainable functionality. The 40mm two-tone stainless steel case features a striking diamond-set bezel that adds a touch of understated luxury without overpowering its professional appearance. The black dial is both sleek and practical, displaying three hands and a date window at the 3 o’clock position for easy readability. Powered by Citizen’s Eco-Drive technology, this timepiece draws energy from any light source—natural or artificial—eliminating the need for battery replacements and offering a sustainable alternative to traditional watches. With water resistance up to 100 meters, it’s suitable for swimming, showering, and snorkeling, making it ideal for daily wear and active lifestyles alike.

Key Features

• Eco-Drive Technology: This watch is powered entirely by light, whether from sunlight or indoor lighting. The integrated solar cell converts light into energy, stored in a rechargeable power cell, ensuring continuous operation without battery changes. This eco-conscious design reduces waste and maintenance, making it a practical choice for long-term wear.
• Diamond-Set Bezel: A refined row of diamonds encircles the case, adding subtle sophistication and visual appeal. The diamonds are precisely set to enhance the watch’s classic aesthetic while maintaining a balanced, professional look suitable for both formal and casual occasions.
• Two-Tone Stainless Steel Construction: The combination of silver and gold-tone stainless steel gives the watch a versatile, enduring style that complements a wide range of outfits. The integrated bracelet provides a seamless, comfortable fit with a polished finish that resists wear over time.
• Black Dial with Date Function: The high-contrast black dial features luminous hands and hour markers, ensuring clear visibility in low-light conditions. The date window at 3 o’clock adds everyday utility, helping you stay organized throughout your day.
• 100M Water Resistance: Rated for depths up to 100 meters, this watch is suitable for swimming, showering, and surface water sports. It’s built to withstand splashes and immersion, offering reliability beyond typical daily exposure.
• Fold Over Clasp with Push Buttons: The secure clasp keeps the watch firmly in place during wear, while the push-button release allows for easy and safe removal. This design ensures both security and convenience.

Technical Specifications

• Model Number: BM7644-51E
• Collection: Classic
• Technology: Eco-Drive
• Base Movement: E111
• Clasp Type: Fold Over Clasp with Push Buttons
• Dial Color: Black
• Case Material: Stainless Steel
• Case Color: Two-Tone
• Case Shape: Round
• Case Width: 40mm
• Band Type: Stainless Steel
• Band Color: Two-Tone
• Crystal Material: Mineral Crystal
• Water Resistance: 100M

Benefits & Use Cases

This watch is designed for men who appreciate both style and sustainability. Its Eco-Drive movement reflects a commitment to environmental responsibility, eliminating the need for disposable batteries and reducing electronic waste. The 40mm case size strikes a perfect balance—large enough to make a statement, yet comfortable for extended wear. The two-tone stainless steel finish allows it to transition seamlessly from business meetings to weekend outings, pairing well with suits, casual shirts, or sporty attire. The diamond bezel elevates its presence, making it appropriate for formal events, dinner dates, or special occasions. With 100-meter water resistance, it’s not just splash-proof—it’s built for real water exposure, including swimming and snorkeling. Whether you’re commuting, traveling, or enjoying outdoor activities, this watch delivers consistent performance and enduring style.

Important Notes

The Citizen Men’s Eco-Drive Corso Watch comes with a five-year limited warranty. By registering your watch online or through the Citizen App, you can extend coverage by one additional year, totaling six years of protection. For setup instructions, visit the official Citizen website and search for model number BM7644-51E; detailed guidance is available under the “features” section. Manuals and setting guides can also be accessed via the My Citizen App for iOS and Android—simply enter the Movement Caliber Number found on the caseback to retrieve your specific instructions. If you need replacement straps, bracelets, or links, check Citizen’s self-service portal to confirm availability for this model. The package measures 4.88 x 3.86 x 3.07 inches and weighs 12.35 ounces.