Portable Wireless BT Stereo Big Power 25W System Radio Music Subwoofer Deep Bass Column Loudspeaker

Features: Strong welding sound quality. Automatically search for BT. Support MP3, WMA and other format music files. Support TF card, BT with call, file playback. Support external MP3 / MP4 / computer and other audio input function. Stereo sound, bass surging.Specifications: Color: blue, black, red, camouflage, gray (optional) Support Port: USB, TF card, AUX audio input USB Output Current: 300mA Function: radio, card function, phone function, voice prompt, dustproof, mobile charger function Transducer: 2 * 2.5 alto loudspeaker, 1 * 3.5 bass loudspeaker Support Format: MP3, WMA, WAV, FLC, APE Storage: 32GB Microphone: 4015（42DB) Operating Voltage: DC5V Sensitivity: -70dbm Diaphragm: Φ95-A1.0mm-60Degree Operating Range: 10M Frequency Range: 80Hz-20KHz Power Supply: USB Operating Hours: 3-4 hours Signal to Noise Ratio: ≥70DB Channel: 2 Cabinet Material: plastic Output Power: 25W Battery: 1 * lithium battery 7.4V 4000mah Package Weight: 1460g / 51.50ounce Item Size: 366 * 138 * 192mm / 14.41 * 5.43 * 7.56in Package size: 370 * 145 * 200mm / 14.57 * 5.71 * 7.87inPackage List: 1 * Loudspeaker