Yamaha YH-E700B User Manual page 23

Connecting via cable > Connecting via headphone cable
NOTE
You can also use a commercially available headphone cable (3.5 mm stereo mini-plug).
(
Use the included in-flight plug adaptor to connect this product to the headphones jack on an airplane seat.
(
In-flight plug adaptor (included)
3.5 mm stereo mini-plug cable
(included)
23