Audio extension lead: 4m (12 feet) (Long Melford CO10)

I have an audio extension lead which stretches to approx 4m (12 feet); it has a 3.5mm jack plug at one end and a 3.5mm socket at the other end. This is ideal if you use wired headphones but need to move further away from where the jack is plugged in, and can also be used to extend a guitar lead.