This Green Bluetooth speaker boasts with product parameters of:
Speaker: 4 5W : 52 mm
Bluetooth standard: 5.1 + EDR
Transmission distance: 10-25 M
Frequency Response: 100Hz-20KHz
Size: 81(H) x81 mm (W)x65mm (D)
Play time: 3-6 Hours
Signal-noise ratio: 75db
Distortion degree: 1% 1W 1KHZ