POPCU IPX4 Waterproof Wireless Neckband ANC Earphone

Bluetooth Versio5.4

Battery Capacity 300mAh

Water Resistance: IPX4

Driver Size: 10mm

Playtime: Up to 40 Hours

Charging Port: USB Type-C 

Frequency Response: 20Hz - 20kHz

Charging Time: ~1.5 Hours