Diameter: 49.1mm Thickness: 14.5mm. Weight: 83gr. Compass. Altimeter. Barometer. Thermometer . Storm alarm. Sunrise/Sunset. Speed and distance tracking. Snorkeling depth function. Water resistant to 3ATM. User replaceable battery. Stopwatch function. Timer. Alarm clock. Electro-luminescent backlight. Language: EN, FR, DE, ES