PRODUCT GRADING Grade A > As New > Refurbished to the highest standards > 12 Months Warranty PRODUCT INFORMATION No More Noise: Active noise cancellation reduces unwanted background noise; ideal for flying, studying, exercising, commuting or just losing yourself in music Listen For Hours: With its premium memory foam, adjustable earcups and built-in rechargeable battery, you can enjoy up to 20 hours of uninterrupted wireless listening Easy To Store: Features foldable, rotatable earcups and a handy carry pouch and accessories, making them ideal to pack away for travelling Quality Audio: The Immerse Bluetooth headphones have been crafted for enhanced bass and audio clarity with big 40 mm drivers to transform your listening experience Highly compatible: Works with most Bluetooth enabled mobile phones and tablets, including iPhone, iPad, Samsung Galaxy, Huawei, Google, Sony Xperia and many more Block out unwanted noise and ignore the distractions of the world with the KitSound Immerse 55 headphones with active noise cancelling. Now you can fully lose yourself in your favourite playlist and sink into the latest shows and movies. No more noise, only music. Specifications:Drivers: 40 mmFrequency response: 20 Hz-20 kHzBluetooth range: Up to 10 mBattery type: LiPo, rechargeablePlay time: Up to 20 hoursCharge time: Up to 3 hours.