2.1 Multimedia Bluetooth speaker. Features: 3" full range driver for satellites. 6.5" bass driver for subwoofer. Unique X design. Innovative automatic multi-color LED. Bluetooth 4.0 version and supporting NFC function. Product qualified by SIG certification. Bluetooth operation range up to 15 meters. Plug & play USB/SD card reader. USB reader supporting MP3/WMA dual formats decoding. Uninterrupted digital FM working on PLL technology. FM storage up to 100 stations. Bright white LED display with good view angle. Full, clear sound with powerful bass. Fluorescence full function remote control. Specification: Power output: 14Wx2+28W (RMS). Satellite driver: 3" full range. Subwoofer driver: 6.5". Frequency response: 130 - 20 KHz(satellite) 30 - 110Hz (subwoofer). Signal to noise ratio: ≥ 70dB. Separation: ≥ 40dB. Dimension: W110 x H118 x D110 mm (satellite). W252 x H252 x D279 mm(subwoofer). Weight: 4.68 kg (net)