1. Support Bluetooth 5.0 hands-free call, no freeze, no delay, external audio source output 2. Support reading TF card and U disk 3. Real sound brings listening enjoyment Connection : Bluetooth connection Interface type: USB Frequency response range: 100HZ-20KHZ Output power: 5W Signal to noise ratio: equal 70db Power supply mode: built-in lithium battery Channel: 2 Playing time: 6 hours Bluetooth protocol: 5.0 Number of speakers: 1 Effective distance: 10 meters Operation mode: knob Play format: MP3 Support format: TF card Speaker adjustment : knob Material:Woodandplastic colour:Photo Color Package Contents: 1 x speaker 1 x USB charging cable 1 x audio cable 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store