13 (NC and BT on)/19 (BT on, NC off)/ 24 (NC on, BT off)
Low battery indicator
2.4 GHz transmission frequency, Bluetooth wireless, around 30 ft. operating range. Auto power off function when in Bluetooth mode with noise cancellation feature turned off. Has three noise cancellation profiles; the headphone designed to automatically selects most appropriate noise cancellation profile when the ambient noise analysis button is pushed. NFC Bluetooth pairing. Earphones swivel to flat for ease of carrying and storage.
Sony MDR-ZX770BN Noise Canceling Headphone - Info & Customer Reviews
Sony MDR-ZX770BN Bluetooth Noise Canceling Headset
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.
superior sound, comfort, and wireless freedom, with digital noise canceling. Bring out tight beats with 40mm drivers and Beat Response Control and stream it all wirelessly with Bluetooth technology, NFC connectivity.
Sony MDR-ZX770BN Noise Canceling Headphone - Reviews