The Fitbit Versa 4 is a new fitness smartwatch designed for iOS and Android operating systems. It features a copper rose aluminum case and a pink sand band, making it a unisex accessory. The smartwatch provides heart rate measurement, sleep tracking, and water resistance. It also includes Bluetooth, GPS, and an altimeter. The Fitbit Versa 4 is equipped with infrared, SpO2, and ambient light sensors, and is ideal for running and jogging. With a rechargeable battery, it can last up to six days.