Bluetooth technology lets you wirelessly stream music from an enabled device. Aluminum and REWIND fabric construction. REWIND fabric: cotton canvas recyclable metals bamboo and FSC certified wood. Comfortable on-ear design for long listening. Rechargeable battery provides 12 hour playtime. In-line microphone with a 1-button remote. Removable tangle-free cable with 3.5mm plug. Foldable design for compact storage.