Sony MDR-ZX770BN Bluetooth Noise Canceling Headset-Black-NEW(International Version) 40mm drivers deliver rich, full sound, Beat Response Control for tight bass/transient response, Comfortable swiveling, around the ear design, Pouch, USB charging cable, and audio cable included Built-in microphone for hands-free phone calling, Rechargeable battery for up to 13hrs music, Passive mode for normal operation without battery usage Convenient 4-way usage w/Bluetooth & noise cancelling, Bluetooth audio streaming with AAC and aptX support, Convenient One-touch pairing with NFC, Digital Noise Canceling reduces ambient noise For two devices to connect using Bluetooth, both devices must support the same profile. If the devices support different profiles, they cannot be connected. When connecting Bluetooth devices for the first time, registration is required. This process is called pairing. For details on operation method, refer to the manual supplied with the product.