Provided by the buyer.

This product is divided into two models, BS-28A and BS-28B.

The BS-28B (55cm/21.6in) is equipped with a remote control. Through four speakers and two built-in enhanced inverter tubes, it produces 40W space-filled stereo sound effect, suitable for movies, games and music. In particular, Hi-Fi, dynamic and 3D surround modes provide clear and pleasant sounds for each instrument, dialogue, explosion and details

The BS-28A (33cm/12.9in) does not have a remote control. It is used by pressing keys. It produces 20W stereo sound effect with full space through 2 speakers and 2 built-in enhanced inverter tubes, suitable for movies, games and music.

Store owner recommended BS-28B

BS-28B

Remote control： Yes

1. adopt bluetooth v5.0 version

2. use 4 total frequency speakers

4. tf card audio input function

5.3.5mm audio input

6. fm radio function

7. use micro charging port

8. can control adding volume and subtraction 9. can control songs up and down song

10. can control music pause and play

Product parameters:

Bluetooth version: jerry v5.0

Battery type: 18650 polymer battery

Battery capacity: 2000ma

Time of use: about 3.5 hours

Output power: 4 euro * 10w

Frequency response: 20hz-20khz

Transmission frequency range: 2.402g-2.480g

Signal to noise ratio: 8080db

Transmission distance: 8-10m

Charging type: microusb 5v/1.5a

Size: BS-28B: 550*50*50mm,

BS-28A: 330x50x50mm

Remote control ：NO

1. adopt bluetooth v5.0 version

2. use 2total frequency speakers

3. usb interface, u disk audio input function

4. tf card audio input function5.3.5mm audio input6. fm radio function

7. use micro charging port

Product parameters:Bluetooth version: jerry v4.2  Battery type: 18650 polymer batteryBattery capacity: 2000ma   Time of use: about 3.5 hoursOutput power: 2 euro * 10wFrequency response: 20hz-20khzTransmission frequency range: 2.402g-2.480gSignal to noise ratio: 8080dbTransmission distance: 8-10mCharging type: microusb 5v/1.5a

Provided by the buyer.