This is a Bluetooth wireless headset by Awei. It has great balance with a decent amount of bass that’s not too heavy. It’s not high in a treble. Overall, this headset has a great smoothness and clarity that picks up minute details. For higher volume range, be sure to have your tablet or phone at full volume and you’ll be able to increase your volume on your headset. It works well with clarity for using it for phone calls. It’s supposed to be waterproof, so hopefully that means it’ll keep working through the sweat. This is great for running because you don’t have the control swinging back and forth against your neck or cheek .