Titanium series of Mac and PC compatible stereo headset will help optimize differentiated learning experiences with breakthroughs in safety, performance, comfort and durability. Headphones used in classrooms or libraries are constantly handled and worn throughout the school week. To keep them in top condition and clean, Titanium headphones are first headphones that can be washed in soap and water (after its cord has been detached). (The HPK-1020,HPK-1520 and HPK-1524 models are not washable.) Once cleaned and thoroughly dried, simply reconnect the replaceable cord and Titanium headphone is ready for reuse.