Cupboard clear-out! This has not been used in a long time but I tested today and it's working fine.
No model number visible.
Please note cable connections: separate 3.5mm sockets are needed for the mic input and the audio output to the headphones. If you have a single socket for both connections you would need the appropriate splitter cable.
The inline controller lets you adjust volume and mute the mic.
The headset will be packed carefully and posted as soon as possible after receipt of payment.