Never put on just took out of the box The Fitbit Luxe Fitness & Wellness Tracker in Black/Graphite Stainless Steel is a versatile activity tracker suitable for both indoor and outdoor activities. With features like a heart rate monitor, water resistance, and sleep tracker, this device helps you track your fitness progress with precision. The stainless steel material and sleek design make it a stylish accessory for unisex adults, while the long battery life of up to 5 days ensures uninterrupted monitoring. Compatible with iOS and Android operating systems, the Fitbit Luxe is a reliable tool for those looking to improve their health and wellness through tracking various sports and activities like gym training, swimming, and running.