The Pioneer DJ HDJ-S7 Professional DJ Headphones Black are high-end headphones designed for DJs on the move. The Pioneer HDJ-SZ Professional DJ Headphones feature a built-in swivel mechanism for flexible monitoring options. The HDJ-SZ Headphones includes custom-developed 40mm HD drivers providing a wide frequency range and high-resolution audio. The wide frequency range ensures you can hear every subtle detail whilst mixing between tunes. The lightweight headphones feature a comfortable flexible headband as ell as soft ear pads that minimise listening fatigue.