Built rugged for classroom use, the HPK-1000 USB headphones from Califone seems bulkier and heavier than it actually is. The headphone sells for $76 and features a "comfort strap" headband for longer wearability. If your student spends a long time in an online classroom, this is a standout feature.

The HPK-1000 features Califone's "Sentinel Technology" --a limiter built into the volume control that keeps the volume levels at or below the recommended 85 db. A red light on the volume control indicates that this technology is enabled.

The earcups have soft foam cushions and fully cover the ear, filtering out distracting noise. However, these are not noise canceling headphones. The detachable cord has a built-in in-line volume control. This is the first washable headphone, and it cleans easily with the cord detached. The durability theme is carried out "inside" the earcup as well. There are slotted baffles to protect the speakers from damage.

Califone products are designed for durability in an institutional setting. With normal care and maintenance, this may be the last headphone you need--unless you decide to upgrade to a headset equipped with a boom mic. Califone offers two such headsets, the HPK-1010 and the HPK 1510.