50W Bluetooth Speaker Column Wireless Portable Speaker Music Center Bass Stereo Subwoofer Support/TF/FM/Radio/USB|Portable Speakers(Black)1.Power supply 50 w 4000 mah Built-in battery Size 30 Appearance *15*15 cm The advanced Bluetooth audio decoding chip is used to support all connections of Bluetooth devices. 2. The radio supports FM, you can directly search for stations in the listening area, the search accuracy rate is 100%. 3. The sound is smooth, clear and dynamic, with different scales: 4. Read TF card and U disk directly: 5.The Bluetooth receiving distance is long, up to 10 meters. 6. Support the audio input of the line and provide it with the function of computer speaker. It can be directly connected to the mobile phone/tablet/TV bluetooth music matching: with hand to no function, it can perform voice communication. The reproduction time of normal volume can reach 40-48 hours.7.colorBlack