Wall-mounted wireless speaker

Type: BS-41A Bluetooth speaker(without remote control)
Connection method: Bluetooth connection/3.5MM audio jack
Interface type: USB
Battery capacity: 2000MA
Frequency response range: 20HZ-20KHZ
Output power: 5W*2
Signal to noise ratio: ≥75dB
Power supply mode: built-in lithium battery
Channel: 2
Playing time: 6 hours
Expansion storage: 32GB
Bluetooth protocol: V5.0
Number of speakers: 2
Effective distance: 10 meters
Function: insert card, radio, voice prompt
Operation mode: button
Applicable people: general
Play format: MP3, WMA, WAV, FLC, APE
Shell material: plastic
Support format: Bluetooth/TF card/U disk/3.5mm
Speaker adjustment method: button
Box material: plastic
Appearance size: 380*78.5*58MM

Type: BS-41 Bluetooth speaker(with remote control)

Bluetooth version: V5.0. 
Battery type: 18650 aluminum polymer batteries. 
Battery capacity: 2000 mA. 
Usage time: approximately 6 hours. 
Rated voltage: 0. 5 m. 
Reference protection circuit: overcharge protection (8.40 ±0.05) V / over protection (5.0 ±0.1) V. 
Frequency response: 20Hz-20KHz. 
Range of launch frequency: 2402MHz-2480MHz. 
Signal noise ratio: ±80 dB. 
Transmission distance: 8-10m. 
Built-in radio: external antenna receiving station. 
Radio frequency band: 87.5-108.  

Size: 570 * 120 * 85 mm.