- SUSTAINABLE WOOD + HEMP CABLE: Bluetooth headphones made with sustainable beech wood that provides a quality finish and natural hemp cable that does not require intensive processing. - BLUETOOTH 5.1 + CONTROL TALK: Wooden in-ear headphones with Bluetooth 5.1 technology and hands-free talking function thanks to its built-in microphone. - USB TYPE-C: Wireless headphones with USB Type-C charging connector. - COTTON POUCH: Sustainable cotton carrying bag included to store the headphones so they don't get scratched.