Sony WH-CH520 Wireless Headphones (WHCH520P.CE7)

Connectivity: Bluetooth 5.2, NFC, compatible with Android and iOS; Bluetooth profiles: A2DP, AVRCP, HFP, HSP, AAC, SBC.

Battery: built-in Li-ion battery, up to 50 h playback, fast charge 10 min = up to 1.5 h playback, charging time ~3 h, USB-C charging, charging indicator.

Headphone type: supra-aural, closed-back, 30 mm drivers, stereo sound, synthetic leather ear cushions, adjustable headband, lightweight design.

Frequency range: 20–20,000 Hz, impedance 32 Ω.

Microphone: built-in noise-cancelling microphone for hands-free calls, supports voice assistants (Google Assistant, Siri).

Controls: buttons for play/pause, track selection, volume adjustment, Bluetooth pairing.

Additional features: DSEE (Digital Sound Enhancement Engine), 360 Reality Audio, multipoint connection (connects to two devices simultaneously), Swift Pair and Fast Pair.

Recommended use: music, calls, multimedia.