Pioneer Bluetooth&reg;-enabled wireless headphone of NFC featured SE-MJ561BT-S Type: headband, Stereo / Mono: Stereo, structure: sealed, noise-canceling: non-compliant Surround: non-compliant, wireless: Bluetooth, interface: Bluetooth Frequency band (L): 9Hz, frequency band (H): 22000Hz Weight (body only): 160 g Accessories: Micro USB cable