Sony Wh CH520 Wireless Headphones

The Sony WH-CH520 Wireless Headphones are ultra-lightweight 147-gram on-ear (supra-aural) Bluetooth 5.2 headphones engineered for multi-day battery endurance, student study sessions, commuting, and remote work, combining 30 mm dome drivers, DSEE upscaling, 2-device Multipoint connection, and up to 50 hours of battery life.

50-hour battery life, 3-minute USB-C quick charge, and 147 g on-ear comfort

Designed to run for days without a charger, the WH-CH520 provides up to 50 hours of continuous wireless music playback (and up to 40 hours of continuous voice communication time) from a single 3-hour charge. When battery power is depleted before a commute or online meeting, a 3-minute USB Type-C quick charge provides up to 1.5 hours (90 minutes) of playback. Upgrading from the earlier WH-CH510, the WH-CH520 adds soft headband padding, smoother urethane foam on-ear cushions, and flat-swiveling earcups in a 147-gram recycled-plastic frame that slips easily into a backpack or laptop sleeve.

30 mm drivers with DSEE, 5-band custom EQ, and 360 Reality Audio

Inside each earcup, a 30 mm dynamic dome driver covers the 20 Hz – 20,000 Hz frequency range and works with Sony's Digital Sound Enhancement Engine (DSEE) to restore high-frequency harmonics lost in compressed MP3 and streaming audio. Unlike entry-level wireless headphones with fixed sound profiles, the WH-CH520 connects to the Sony Sound Connect (Headphones Connect) app, giving users a customizable 5-band equalizer, Sony's Clear Bass slider, Find Your Equalizer guided tuning, and 360 Reality Audio ear-profile analysis.

Bluetooth 5.2 Multipoint, hands-free calling, and physical button controls

Wireless connectivity runs on Bluetooth 5.2 (supporting SBC and AAC codecs across A2DP, AVRCP, HFP, and HSP profiles) with simultaneous 2-device Multipoint connection so the headphones can remain paired to a PC and smartphone at the same time and switch automatically when a phone call rings. Setup is streamlined via Google Fast Pair on Android and Microsoft Swift Pair on Windows 10/11. A built-in omnidirectional microphone with noise-suppression processing keeps voice calls clear, while tactile physical buttons on the right earcup handle volume, track transport, calls, and voice assistants without accidental touches (note that the WH-CH520 operates purely wirelessly over Bluetooth and does not include a 3.5 mm audio jack).

Bangladesh buyer checklist

Before ordering the Sony WH-CH520 from any seller in the BiponiBD catalog, confirm the color variant (Black, White, Blue, Beige/Cappuccino, Pink, or Yellow), verify that the USB-A to USB-C charging cable (approx. 20 cm) is sealed in the box, and check seller warranty terms.

Official references: Sony Official WH-CH520 Wireless Headphones Specifications.