DT 700 PRO X and DT 900 PRO X
On the inside of the headband on the right-hand side.
DT 1770 PRO MKII and DT 1990 PRO MKII
On the inside of the headband on the left-hand side.
DT 700 PRO X and DT 900 PRO X
On the inside of the headband on the right-hand side.
DT 1770 PRO MKII and DT 1990 PRO MKII
On the inside of the headband on the left-hand side.