I do recommend this item. Up to 17 hour battery life. This is a great company with a wonderful product I have a little Thai wife and she wanted just a little padding to ware jeans. )The sound is excellent for a relatively small and light speaker. I give full marks because for the price they are awesome. I have used their first scope and loved it because off being able to keep ear wax build-up under control. Hello! I have not heard any background hiss on any music except for old recordings which has background hiss whatever headphones I play it through. Hoping this second pair is as awesome as the old ones after they stretch a bit.