I. Geometric Engineering: The Square "Big Dial" AdvantageThe SANDA 2156 breaks the mold with its distinctive square silhouette, offering a larger screen area for digital data without increasing the overall bulk.Maximized Visibility: The 42mm square dial allows for a larger, bolder LED font. This "Big Dial" design ensures that time, date, and "Week Display" are readable at a glance, even during high-intensity sports or tactical maneuvers.Ultra-Slim Profile: At only 12mm thick, this is one of SANDA's most streamlined military watches. It fits comfortably under jacket cuffs and tactical gear, reducing the risk of snagging while maintaining a powerful presence.Precision Digital Movement: The internal digital module (CE Certified) provides professional-grade accuracy and features a "Repeater" function, allowing for audible time cues and multi-stage alarms.II. Tactical Utility: Backlight & ChronographBuilt for life in the field, the 2156 is equipped with a full suite of electronic "Sport" features.High-Luminosity Backlight: The integrated LED backlight provides a clean, even glow across the entire square display. Designed for "All-Black" environments, it ensures operational readiness in total darkness.Professional Chronograph: Features a high-accuracy stopwatch for interval training, navigation, or timing critical tasks. The "Complete Calendar" and "Week Display" keep you oriented during long-term outdoor expeditions.Shock-Resistant Chassis: The case is forged from a high-impact "Plastic" polymer designed to absorb kinetic energy. The Acrylic mirror is recessed within the bezel to protect it from direct impacts, ensuring the watch remains "Shock Resistant" in the toughest terrains.III. Environmental Resilience: 5Bar (50M) WaterproofingThe SANDA 2156 is built to survive the elements, from urban commutes to mountain treks.5ATM (50M) Protection: Rated for 5Bar, this watch is fully "Water Resistant" for daily use. It effortlessly handles hand washing, heavy rain, cold showering, and swimming in shallow water.+1Flexible Rubber Strap: The 23mm wide rubber band is engineered for comfort and durability. It is sweat-resistant and remains flexible in extreme temperatures, while the classic buckle ensures a secure fit during high-impact movements.+1Chemical Safety: Developed with None high-concerned chemicals, the SANDA 2156 is skin-safe and hypoallergenic, meeting strict safety and CE Certification standards.IV. Style Integration: Military Fashion for the Male AthleteContemporary "Sport" Aesthetic: The square case provides a modern, tech-forward look that transitions perfectly from "Military" use to "Fashion" street-wear.Lightweight Performance: By utilizing high-grade plastic and rubber, SANDA has achieved a lightweight design that prevents wrist fatigue during full-day wear.Eco-Efficient Distribution: To offer maximum value, this model is provided in the "No Package" format, focusing all engineering costs on the watch’s "Hardcore" performance and durability.Comprehensive Technical Specifications TableAttributeDetailed Specification & GradeBrand / ModelSANDA / 2156 (Square Tactical Series)Display TypeHigh-Definition Digital (LED)Case ShapeBold Square (Big Dial Aesthetic)Dial Diameter42mm (Maximized Digital Interface)Case Thickness12mm (Ultra-Slim Profile)Case MaterialHigh-Impact Reinforced PlasticMirror MaterialRecessed Impact-Resistant AcrylicWater Resistance5Bar / 50 MetersBand MaterialProfessional Grade RubberBand Width / Length23mm / 21cmBatteryHigh-Capacity (Included)FeaturesBacklight, Chronograph, Repeater, Alarm, Full Calendar