Closed-back headphones – Bluetooth – With Noise cancelling – Built-in microphone – Volume control – Sony 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 range: 20 Hz – 20,000Hz (sampling 44.1Hz), 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 shutdown. Call functions: HD Voice, echo cancellation, noise suppression, SideTone. Voice assistants: Google Assistant, Amazon Alexa, Siri, Tencent. Sony applications: Headphones Connect, Google Fast Pair, Now Playing. Technical features: Type: dynamic closed, 30 mm dome driver, Frequency response: 7 – 20,000 Hz, Impedance: 325 Ohm (1 kHz) (when connecting via headphone cable with the unit powered on), 31 Ohm (1 kHz) (when connecting via headphone cable with the unit powered off), Sensitivity: 108 dB/mW (when connecting via headphone cable with the unit powered on), 99 dB/mW (when connecting via headphone cable with the unit powered off). Detachable single-sided cable with L-shaped mini stereo plug, Mini jack stereo input. Noise Cancelling: 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 cancellation featuring Dual Noise Sensor technology and integrated V1 processor, battery life up to 35 hours and fast 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.