These AKG closed type stereo headphones are the replacement and improvement upon the popular K44 headphones.The ergonomic self-adjusting headband allows you to fit the headphones to any head shape and size.This also enables you to achieve maximum comfort when using your headphones. The lead is a 2.5m straight lead with a 3.5mm plug and 6.3mm adaptor.These are lightweight headphones weighing only 200g making them very easy to transport. Replaces and improves upon the popular K44 headphones Ergonomic self-adjusting headbandFrequency Response (Hz): 18-20000 Lead: Straight screened, 2.5mPlug: 3.5mm, with 6.3mm adaptor. Weight: 200g