Built- in amplifier -Speakers for PC, laptop, MP3 or MP4 player, etc. Color : Black Type: 2.0 -Power: 3W * 2 (RMS) -Speaker: 42 mm Resistance: 4 Ohms -Frequency range: 85Hz - 18KHz Connection: 3.5mm jack Power supply: 220V -Volume control wheel Body Material: Wood -Power cable length: 110 cm -Length of mini jack cable: 90 cm -Cable length between speakers: 70 cm What's in the box 2 x Professional Portable speakers