Product detailsWireless Listening – NFC Technology.Connect through Bluetooth with NFC.High Quality Bluetooth audio streaming.40mm driver units for broad, dynamic and balanced sound.20-20,000 Hz frequency response when streaming wirelessly or even broader frequency response from 3-28,000 Hz when using the audio cable.Extra Bass for impressive low-end bass response and club-like enhanced low-frequencies.wrap around ear cushions for long lasting comfort.Ear cushions with acoustic seal for initiate listening experience.Swiveling ear cups with flat foldingNFC Smart phone linking.Integrated Microphone and Bluetooth for hands-free calling.5 color for choice:Black,Silver,Red,Gold?Blue

Bluetooth audio streaming with AAC and APT-X supportExtra Bass for rich musical tunes?Passive mode for normal, corded operation without batteryHeadphones with extra bass have comfortable around-the-ear design40mm driversFrequency response: 3Hz-28kHzBuilt-in microphone for hands-free phone callingRechargeable battery for up to 5 hours of musicConvenient 1-touch listening technologyOver the head Bluetooth headphones have sophisticated swivel design for portabilityUSB charging cable included?Detachable audio cable also added for passive mode and corded operations. Added for convenience