World class noise cancellation-makes quiet sound quieter & music sound better Bluetooth & NFC Pairing with voice prompts make for hassle-free wireless connections. Volume Optimized EQ gives you balanced audio performance volume Noise rejecting dual microphone system provides clearer calls even in noisy environment.
USB Charging cable :AC input 11-240V DC nput 5v
Large &b Small Volume adjustment
Driver Unit : 40mm diameter
Operating frequency :2.4GHz-2.4835GHz
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