WSTER WS-2911 Wireless Bluetooth Microphone Speaker

Wireless transmission range : 10 M
Audio noise ratio : ≥90db
Battery capacity : 1200mAh
Voltage : 3.7V
Normal volume playing time : 2-3 hours
Horn specification : OD 52mm x 1 pcs
The speaker power : 4 Ω / 5 w
Frequency response : 120hz-20khz
FM Radio: Yes
AUX Mode: Yes
Bluetooth: Yes
Microphone: Yes
Recording/recording playback: Yes
Magic tone sound: Yes
USB: Yes
TF/SD Card Reader: Yes
Phone Answering: Yes
Autodyne: Yes