These canalbuds/earbuds/earphones support PDA, PSP, Laptops, MP3, CD/DVD players with a 3.5mm headphone / earphone output jack. They are great for schools, museums, the gym, families, etc. They are low cost and last a long time! Highly durable! They have a 39"+ cord length, and come INDIVIDUALLY WRAPPED in their own bag (as pictured) - BEST for schools and classrooms or those doing distance learning!