Sony WH-CH520 Beige

• Type: on-ear, closed-back
• Bluetooth: version 5.2
• Drivers: 30 mm
• Frequency response: 20 Hz – 20,000 Hz
• Impedance: 32 Ω
• Codecs: SBC, AAC
• Sound enhancement features: DSEE
• Battery life: up to 50 hours
• Charging: USB-C, full charge ~3 hours
• Microphone: yes, headset function supported
• Weight: about 147 g
• Design: soft earpads, adjustable headband

Short comparison with WH-CH510
Compared to WH-CH510, the WH-CH520 offer a newer Bluetooth version, better battery life and DSEE sound enhancement, so they sound cleaner and provide a more stable wireless connection.