I was part of a design team responsible for the HPM 83 in my role as Senior Industrial Designer at Sony Ericsson Creative Design Center.
I designed these headphones right after I started working at Sony Ericsson. Headphones with neck-band to support the Walkman phones.
Fairly low price, and based on existing technology from the supplier. I went for a simple design with focus on the headphones itself and we managed to get real brushed aluminium panels on the headphones, something which really lifted the design. Turned out pretty nice. Launched in 2007.