Microlab M300U, 2.1ch subwoofer speaker with USB/SD port for mp3, 12 watt + 14 watt x 2 RMS, Built-in FM tuner for FM radio broadcast, Volume or playback controls for quick access and adjustment. Specification: - Amplifier: -Output power: 38 Watt RMS -Power distribution: 12 Watt x 2+14 Watt RMS -Frequency response: 40 Hz - 20 kHz -Signal/Noise ratio: > 80 dB -Separation: > 40 dB - Speakers -Tweeter driver type : 2.5" -Woofer driver type: 5" - Interfaces -Input: 3.5ST/USB/SD -Output: 2RCA - Accessories -3.5 mm stereo-3.5 mm stereo audio cable X 1 pc -User manual X 1 pc Dimensions: - Subwoofer dimension: 230(W) x 225(H) x 230(D) mm - Satellite dimension: 85(W) x 196(H) x 115(D) mm - Product net weight: 3 kg - Gift box dimension: 284(L) x 269(W) x 342(H) mm - Gift box gross weight:3.5 kg - Export carton dimension: 552 (L) x 298(W) x 706(H) mm - Export carton gross weight: 15.2 kg (4 sets) What's in the box 3.5 mm stereo-3.5 mm stereo audio cable x 1 pc User manual x 1 pc