promotional custom Bluetooth speaker products stereo sound best small car speakers
Frequency: 20Hz-20KHz
MAX Power output: 3W
Input: 5V/ 500mAh
Speaker diameter: 27mm
Range: 10meters
Battery: 250mAh
Antenna: Built in
Lasting time: 2-3 hours in max volume Charged time: 2 hours
Material: ABS plastic+ PVC/Silicone Material