Brand N/A Model ZY-401 Quantity 1 Color Black Bluetooth Version V2.1+EDR Operating Range 10 meter Compatibility V2.0/V1.1 Microphone Yes Channels 1 Total Power 3W Impedance 2.6 ohm Signal to Noise Ratio(SNR) 95 db Radio FM Radio(87.5~108MHz) Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 520mAh Compatible With Cellphones with bluetooth Other Features Interface: micro USB TF card slot; blue light on when turn on the speaker red light on when recharge the speaker.Biggest support 32 gb TF card BQB Certification No Packing List 1 x Speaker 1 x English user manual 1 x USB cable (48cm)