A-20: Frequency Range:160Hz-20KHz

Power Supply: USB

Headphone Input: Yes

Speaker Power: 6W RMS

Speaker System: 2.0

Volume Adjustment Button: Yes

Product Dimensions: 7.8 cm x 17.8 cm x 10.4 cm

Package Dimensions: 16.55 cm x 11.0 cm x 18.0 cm

Magnetic Protection: Yes

Compatible Devices: Phone, Tablet, Computer, MP3

Warranty Period: 24 Months

Design: Ergonomic Design and Easy Operation

Portability: Dimensions Suitable for Transportation

S/N (Signal to Noise Ratio): 75dB