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Sony WH-CH720N Noise-Cancelling Wireless Headphones Active noise-cancelling: Yes | Battery life: Up to 35 hours | Features: Tactile buttons rather than touch control, multipoint connectivity
Simplified graphical depiction of active noise reduction. To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control.A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds.
Sony Ericsson Cordless bluetooth headset. Telephone headsets connect to a fixed-line telephone system. A telephone headset functions by replacing the handset of a telephone. Headsets for standard corded telephones are fitted with a standard 4P4C commonly called an RJ-9 connector. Headsets are also available with 2.5 mm jack sockets for many ...