Closed-back headphones – Bluetooth – With Noise Cancelling – Built-in microphone – Volume control – Sony’s integrated V1 processor – Cable length 150 cm – Bluetooth Version 5.2 power class 1, Frequency range: 2.4 GHz, Interfaces: A2DP, AVRCP, HFP, HSP, Supported codecs: SBC, AAC Frequency response: 20 Hz – 20,000 Hz (sampling 44.1 kHz), Multi Pairing, Multi Point – allows pairing with two Bluetooth devices simultaneously, Manual Pairing Equalizer functions with customization options, 360 Reality Audio Setting, Sound Quality Mode, DSEE, Automatic shut-off Call functions: HD Voice, echo cancellation, noise suppression, SideTone Voice assistants: Google Assistant, Amazon Alexa, Siri, Tencent Sony Headphones Connect, Google Fast Pair, Now Playing Technical specifications Type: closed dynamic, 30 mm dome driver, Frequency response: 7 – 20,000 Hz Impedance: 325 Ohm (1 kHz) when connected via headphone cable with the unit on, 31 Ohm (1 kHz) when connected via headphone cable with the unit off, Sensitivity: 108 dB/mW (when connected via headphone cable with the unit on), 99 dB/mW (when connected via headphone cable with the unit off) Detachable single-sided cable with L-shaped mini stereo plug, Mini stereo jack input Digital Noise Cancelling with dual microphone, Ambient Sound Mode: Normal or Voice Power and Battery Built-in rechargeable lithium-ion battery 520 mAh DC 3.85 V, Battery life: Approximately 35 hours with Bluetooth and noise cancelling active during playback and communication Battery life: Approximately 50 hours with Bluetooth and noise cancelling off during playback – Approximately 40 hours with Bluetooth and noise cancelling off during communication, The unit can be used for 4.5 hours after 10 minutes of charging – 1 hour with just 3 minutes of charge Charging time: Approximately 3.5 hours for a full charge, Charging via USB Type-C port, Power consumption: 3 W – Wireless Bluetooth headphones with noise cancelling featuring Dual Noise Sensor technology and integrated V1 processor, battery life up to 35 hours and quick charging, 360 Reality Audio certification, beamforming microphones with Precise Voice Pickup technology for high-quality calls, Multipoint connection allowing pairing with two Bluetooth devices simultaneously.