These What Hi-Fi Award Winning headphones contain inverse phase active technology which \'cancel out\' background noise resulting in a more enjoyable audio experience. The 40mm driver units provide superior sound performance whilst the soft, cushioned earpads are comfortable to wear for long periods. Perfect for on a long flight, train journey, in the car or just to use at home. Key Features Award winning noise cancelling headphones for a very affordable price Very effective noise cancelling circuit uses inverse phase active technology to provide 16dB of active noise reduction Closed back, circumaural over ear design Powerful 40mm drivers 24K gold plated cable contacts 3.5mm stereo jack with 6.3mm adapter and aeroplane socket adapter Folding design External Review As reviewed in the March 2010 edition of What Hi-Fi Sound & Vision! The LINDY Active Noise Cancelling Headphones received 4 out of 5 Stars in a group test of noise cancelling headphones in the March 2010 edition of What Hi-Fi. The test compared a range of headphones priced from 40 up to 300. Some of the comments made about the LINDY headphones included... \'...available at a tempting price...smaller and lighter than most...while also being comfortable on the head.\'\'...the noise cancellation proves decent...they have decent bass weight and punch...these are a solid effort.\' Click here to read the full review. As reviewed in the Sunday Mirror in May 2012 Awarded 10 out of 10 and rated Star Buy. Comments made about our Noise Cancellers included... \'Incredibly affordable for noise cancelling headphones\' \'...comfortable and the sound quality is excellent. Loud, but not much sound leaks out to disturb others.\' Package Contents Active Noise Cancelling Headphones Detachable 1.2m cable with 24K gold plated 3.5mm jack 3.5mm to 6.3mm stereo adapter In-flight adapter 1 x AAA battery Carry bag User manual