GBD-100SM-4A1DR This G-SHOCK G-SQUAD GBD-100 Series model features a white-based translucent resin band with a matching resin case and bezel, paired with a high-contrast Memory-in-Pixel digital display for a clean sporty look. Built with shock-resistant construction, mineral glass, and 200-meter water resistance, it combines dependable G-SHOCK durability with Bluetooth smartphone connectivity and accelerometer-based training functions. Confirmed features include step tracking, distance, speed and pace measurement, Auto Lap, Auto Pause, calorie tracking, interval timing, four daily alarms with snooze, vibration alerts, smartphone GPS distance correction, phone finder, full auto-calendar, and Super Illuminator LED backlight, making it a practical choice for running, training, and everyday active wear.