Business Collar Clip Key features LED battery status display: keep track of battery level at a glance. Quick charging: 20 minutes of charging provides up to 20 hours of playback. Car driving use: designed for continuous invehicle use with incoming call alerts. Fitness and music: supports unrestricted fitness activities and music playback at all times. Outdoor riding: enables hands operation and delivers clear voice even in windy conditions. Use scenarios In the car: clip the device to your collar for hands operation, enjoy music, and receive incoming call alerts without taking the phone out of your pocket. Outdoor cycling or running: wear during workouts to listen to music continuously while staying aware of calls, with clear voice in windy conditions. Gym or daily tasks: use during workouts or daily activities to maintain music playback and receive call alerts without interruption.