Sony WH-1000XM4 Over Ear Wireless Bluetooth Headphones

General Features
Headphone Type:Closed, dynamic
Driver Unit:40mm, dome type (CCAW Voice coil)
Magnet:Neodymium
Diaphragm:Aluminum coated LCP
Frequency Response:4Hz-40,000Hz
Frequency Response (Active Operation):4Hz-40,000Hz
Frequency Response(Bluetooth® Communication):20Hz – 20,000Hz (44.1kHz Sampling) / 20Hz – 40,000Hz (LDAC 96kHz Sampling, 990kbps)
Sensitivities (dB/mW):105dB / mW (1kHz) (when connecting via the headphone cable with the unit turned on) , 101dB / mW (1kHz) (when connecting via the headphone cable with the unit turned off)
Cord Type:Single-sided (detachable)
Cord Length:Headphone cable (approx. 1.2m, OFC strands, gold-plated stereo mini plug)
Plug:Gold-plated L-shaped stereo mini plug
Wearing Style:Circumaural
NFC:Yes
DSEE Extreme:Yes
Passive Operation:Yes

Battery
Battery Charge Time:Approx. 3 Hours (Full charge)
Battery Charge Method:USB
Battery Life(Waiting Time):Max. 30 hours(NC ON), Max. 200 hours(NC OFF)

Bluetooth® Specification
Bluetooth® version:Version 5.0
Effective Range:Line of sight approx.30ft (10m)
Frequency Range:2.4GHz band (2.4000GHz-2.4835GHz)
Profile:A2DP, AVRCP, HFP, HSP
Supported Audio Format(s):SBC, AAC, LDAC
Supported Content Protection:SCMS-T

Noise Cancelling
Noise Canceling ON/OFF Switch:Yes
Personal NC Optimizer:Yes
Atmospheric Pressure Optimizing:Yes
Ambient Sound Mode:Yes
Quick Attention:Yes

Portable Headphone Amplifier
Volume Control:Touch Sensor

Processor/Transmitter
Input(s):Stereo Mini Jack

Noise cancellation is accomplished with Sony’s dedicated HD Noise-Canceling QN1 processor and Sense Engine. Sense Engine is designed to automatically adjust the level of ambient so/ und based on your environment. If quick communication is needed, the Quick Attention feature lets you quickly connect with the outside world by simply covering the right earcup with your hand.