- Wireless Connectivity -Support USB/TF card -AUX Function -Rechargeble battery -Karaoke Function -Wireless Stereo twin Speaker Function -When you have two Devices, -need to long press "M" to Build -The connection both -FM radio, search and record -The FM frequency Automatically Specification : - Wireless transmission Rang : up tp 10 meter. -Speaker Drive Size : 6.5inch, -Output power : 10W. -Frequency reaponse : 100Hz - 20KHz, -Signal to noise ratio : >=85dB. -FM Scan Rang : 87.5-108.0MHz -USB Charging : DC5V. -Battery Capacity : 1200mAh -Max Memory Support ( USB/SD):32 GB -Play Time : Up to 1hours At 75% Volume -Charging time : 3 Hours , -Product Size : 18.5*11.6*22.9CM Package Content: USB Charging Cable Microphone,