Sennheiser has introduced their second full size round-the-ear Active Noise Cancellation headphones to their five strong "NoiseGard" range.

Described as a more simple, more affordable "Stealth Black" version of the £300 PXC 450s, these will still set you back £229.99.

The electronics and batteries (AAA) for the noise cancellation tech is all inside the headphone, so nothing dangles, and even if the batteries run out, the headphones still work "normally".

The Sennheiser NoiseGard technology claims to electronically remove 85% of noise, taking out the drone and roar of engines, voices, and general noise.

The "travel proof" headphones claim to be ultra comfortable to wear, with audiophile-grade Hi-Fi sound quality and are available now. For £230.