Manufacturer: A4Tech
Model: B20
Type: Wireless
Color: Grey
Frequency: 20 Hz-20 kHz
Specifications: Speaker Size: 13 mm;Earphone Sensitivity: 102 dB @ -10 dBFS;Mic. Sensitivity: -42 dB @1 kHz/Pa;Bluetooth Version: v5.2;Operation Distance: 10 m;Earphone Battery Type: Lithium Battery (40 mAh);Charging Power: 5V=500mA
Warranty: 24 Months