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These headphones use a single 50mm woofer and three 13mm tweeters in each earpiece to deliver superb sound quality across the entire musical spectrum. They feature a frequency response range of 20Hz to 20KHz and a 120dB sensitivity, so you will hear every note with clarity and as much volume as you can handle.
The Bluetooth A2DP and AVRCP profiles are supported for music, allowing for wireless transmission of the audio signal as well as remote operation of the source device using the controls on the headset. The headphones also support the Bluetooth HFP and HSP profiles, so you can use them to answer and place calls from your smartphone. The Bluetooth module has a reception range of about 30-60 feet in clear air.
The headphones have a built-in Lithum-polymer battery with capacity for up to 20 hours of playback/talk time and a whopping 325 hours of standby time. The battery takes about 3 hours for a full charge and is charged using the included micro USB cable. Included in the package are three audio connection cables, allowing the headphones to be used in wired mode.