SD/USB Card reader speaker
Speaker for SD/ USB disk. Also for mp3, mobliephone … by 3.5mm audio cable.
Rated Power: RMS2W
Frequency Response: 150HZ---18KHZ
S/N Ratio: ≥ 85db
Output: 3.7V/500MA
Power Supply: Li-ion battery
Speaker Drivers: 4Ω /2W
Available colors: Orange, black, blue, pink, red