Advanced Sleep Coaching. Body composition and BMI information. Get ECG/Heart rate Blood Oxygen and Skin Temperature readings. Auto Workout Tracking. Improved battery life. Stay connected when you sync with a Galaxy mobile device. GPS Route tracking and Track Back. Get notifications to your wrist. Workout in tandem with friends and family. Advanced Run Coaching. Trip Detection. Sapphire crystal dial window. Black titanium case with black 20mm D-buckle sports band. Case size: 45.4mm x 45.4mm x 10.5mm. Includes M/L Sports band and wireless charger.