Audio quality and volume no complaints.
Caution 2 buttons are used to track changes + volume.
- The long press is used to change the volume.
- Pressure short change music.
This is reversed with respect to others.
Against the housing by is better than that of the level Antec durability without scratches. Applying a paint / a matte finish (less good as a real frosted plastic)
Unfortunately no perfect product, I will test others ....