GAOKE GK-A32 V2.1 Mic Hands-Free AUX EDR NFC Touch Screen Wireless Subwoofer Bluetooth Speaker <br>Description:<br>This is GAOKE GK-A32 Touch Screen Dual speakers. Owns 3D surround， Bluetooth Handsfree. Can be play in long time support. Owns Exclusive private mode， its the best voice for you ears.<br>Specification1:<br>          Bluetooth Version       V2.1+EDR， support NFC           Bluetooth Transmission       up to 10 Meters           Audio Channels       2.1 channels， stereo audio sound           Color       Black Red Blue           Distortion       &amp;lt; 0.3%           Distortion       1%           Sensitive       600mv           Max Watt       3wx2           Signal-to Noise       &amp;ge;85dB           Frequency Scope        100Hz ~ 18KHz            Power Supply       Built-in Lithium battery            Battery Capacity       1500 mAh           Battery Charging Voltage       3.7V~5V            MAX Voltage       DC-5V           Working Time       4 hours ~ 7 hours           Audio Input         3.5mm stereo\/ Bluetooth， AUX， SD card           Music Formate       MP3，WMA，APE，WAV，FLAC              Data Transmission       2.1Mbps           Key Control Mode       Touch Screen           Charging Interface         USB Micro 5P Socket           Case Material       Plastic           Net weight       249g                 Gross Weight       560g            Product Size       178 x 65 x 67mm           Gift Box Size       214 x 95 x 72mm   <br>Specification2:<br>          I\/O       speaker       50 mm           Loudspeaker Output       3W x 2           USB Charging slot       x 1           SD Card slot       x 1           Aux-in slot 3.5mm       x 1z ( 3.5mm )           Look-up Table of Functions       TF card       &amp;radic;           Aux-in       &amp;radic;           FM radio       &amp;radic;           USB slot       &amp;radic;           LED Light Indication       &amp;radic;           Hands-free phone call       &amp;radic;           Battery built-in       not removable           Warranty       1 year   <br>Product Digram:<br>NFC IndicationSD Card PortMicro USB Port3.5mm AUX PortPower On\/ Power offLED Indication for chargingVolume Down\/ Previous song or stationVolume up\/ next song\/ FM next stationPause\/ Play\/ Play\/ Answer\/ Reject a callBluetooth Indication or disconnection， mode for Bluetooth\/ SD Card\/ FM play<br>Operation Manual For The Buttons(Bluetooth\/SD Card\/FM Mode):<br>          Step1       Volume+: Short press for next song or station， long press for volume up.           Step2       Volume-: Short press for previous song or station， long press for volume down.           Step3       Pause\/Play: Short press for pause or play music， long press for station searching in radio mode.