Full-range loudspeaker Self-contained sound field:Equipped with 3W full-range speakers and sound cavity, you can enjoy the sound and shocking sound effects when playing any track. Omnidirectional drive unit:Adaptive audio algorithm, to achieve full-range sound field reconstruction, low-frequency strong and full high-pitched ethereal and clear,placed everywhere,you can feel the charm of sound effects. Upgrade Bluetooth 5.0:Equipped with the new Bluetooth 5.0 technology, it is stable and smooth, and the signal transmission range is about 10 meters,allowing wireless music to freely in the playing space. Built-in noise reduction microphone:Built-in noise-reducing microphone, after being connected with the mobile phone Bluetooth supports Bluetooth hands-free call, short presses the play pause button to answer the incoming call, and short presses the up button again,which is simple and convenient. Name: metal Bluetooth card speaker Bluetooth version: Bluetooth 5.0 Transmission distance: 10m Function support: Bluetooth music, hands-free phone, taking photos. Sound generating unit: 4/3W Frequency response: 150Hz-18KHz Output power: 1W Signal to noise ratio: 80dB Playback function: Bluetooth, TF card Battery: Built-in high-performance polymer carp battery Capacity: 500mAh Charging voltage: 5V DC Charging line: Type -C fast charging cable (The product has a label, which does not affect its use) Colour:Red Material:ABS Package Contents: 1 x Bluetooth Speakers 1 x Charging cable 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.