U-disk, SD/MMC card reader speaker
MP3 format file playback
Built-in Li-ion battery: 3.7V 500mAh
Rated power: RMS 3W + 3W
Frequency response: 18Hz to 20kHz
Drive unit: 50mm/4Ω x 1 + 40mm/4Ω x 1
S/N ratio: 80dB
Audio input: mini USB jack
Power output: 3.7V, 500mAh Li-ion battery
Product size: 7 x 6.5 x 15.5cm
Weight: 500g