M80 Speaker Wireless bluetooth FM Radio TF Card AUX-In Sound Box 1800mAh Portable Voice Amplifier with Mic for K Songs Teaching Meeting-Black

Features: - One second pair of wireless bluetooth. - 50 meters wireless range, stable signal. - Lithium battery has large capacity and long endurance. - High quality speakers, large volume, clear voice without noise. - Digital audio processing technology, one key loop playback. - TWS function, using Bluetooth can connect two computers at the same time. - Support FM radio function.
Specifications:     Brand         Model   M80      Color   Black     Net Weight (g)   750g     Dimensions     10.1 * 10.5 * 5.7 cm   With Microphone   Yes   Volume Control   Yes   bluetooth Version   V 4.2   Supported Profiles   HSP/HFP/A2DP/AVRCP   Transmission Distance   33  feet (10m)     Frequency Response   180-18kHz   Playback Format    MP3/WAV/WMA  Power  5W  Power Input    9V-500mA Max   Battery Capacity   1800mAh   Playing Time (h)  
Mic Mode: 10-15h 
Music Mode: 6-10h   Mic Sensitivity    -39dB±1dB  Mic Transmission Distance  50m  Mic Transmission Frequency    649MHZ- 699.5HZKEY _TAB Mic Battery  500mAh   Connectivity   bluetooth/ 3.5 mm Aux-In/ TF card/ U disk/ FM
Package Included: 1* Voice Amplifier1* Mic1* Charger1* USB Cable1* Waist Band1* User Manual