I found the sound quality to be very good with this headset and the volume and mute controls worked well. The problem is the earbud! I have small ears and although the under ear loop works well, the bud that fits into your ear is just too big and becomes quite painful after a short time. I work from home and spend about 70% of my day on the phones, so I need something that is comfortable for extended periods. I would buy this model again for the functionality ONLY if the earbud was changed to something smaller and softer for better comfort with extended use.