MY VISION Portable Mini Speaker Bluetooth Outdoor Support SD Card USB Player Stereo Suond Handsfree Specification:Brand Model:MY VISION M8Bluetooth Version:3.0Output Power: 3W x 2 (Stereo)SNR: &amp;gt;=85DBFrequency Range: 2.4GHZRated Impedance:4&amp;Omega;Frequency Response:200HZ&amp;mdash;20KHZWorking Voltage:DC 3.7VCharging Voltage:DC 5VBattery Capacity:500mAhOperating Distance:10MCharging Time: 2-3 hrs Playing Time: 3-4 HrsSize:15x2.5x6cmMaterial:ABS+PC Feature:Support FM radio.Support TF card play.Support USB flash drives play.Shock &amp;amp; impact protection.Standard USB \/ DC Charging Port.Built in rechargeable Lithium Polymer Battery.TF Card slot so you can plug your card direct and play.Compatible with all wireless devices with a Bluetooth connection.You can also use this speaker as a hands-free device for voice calls. Keep 5-10cm between speaker and mouth when using phone function.  Questions:A: How to pair Bluetooth speaker with mobile phone?1.Be sure the Bluetooth Speaker is on.2.Turn on the Bluetooth of mobile phone and search the devices with Bluetooth;then the match name with &amp;ldquo;Myvision&amp;rdquo; is chosen.Click the word &amp;rdquo;pair successfully&amp;rdquo; will be announced. B: How to change language(english and chinese)?Press on 2 voice volume ajustment buttons same time for 3 seconds. Package included:1 x USB Cable1 x User Manual1 x 3.5mm Audio AUX Cable1 x MY VISION M8 Portable Mini Speaker<br>More details: