The Polar Vantage V3 GPS Watch with H10 Heart Rate Sensor in Night Black is a premium fitness tech device designed for both indoor and outdoor activities. With a high-resolution display of 454 x 454, this unisex adults' watch offers a wide range of measurements including heart rate, speed, time, calories, and distance. Featuring advanced sensors such as SpO2, ECG, accelerometer, GPS, and compass, this watch is perfect for gym training, swimming, and running. Additionally, it boasts features like sleep tracking and a heart rate monitor, making it a comprehensive tool for fitness enthusiasts looking to track their progress and improve their performance.