Bluetooth Speaker TG528 Mini Portable Outdoor Wirele Loudspeaker Subwoofer Built in Microphone Support TF Card FM Radio MP3 Version:5.0 Working distance:10M SNR:85db Battery:3.7V 500mah Normal volume playing time:1H Speaker driver:52mm Power:4/5W Frequency response:50HZ-20KHZ Unit size 70*70*100mm Unit weight:248g Charging:5V/500MAH 1.International advanced wire-le chip and circuit design techniques, support all wireledevices. 2.With Hi-Fi speaker, to make sure the clear and bright sound. 3.The wirele working distance is 10 meters, can connect all out wirele devices (cell phone/Tablect PC/ TV) to play music. 4.With AUX line in, can directly connect the outside devices, for example, tablet PC/TV/cell phones. 5.Support Micro SD card and USB card, play MP3 format audio. 6.With FM function, can search radio station broadcast auto-matically. 7.Buitin Mic for handsfree call. 8.support TWS Instructions for use 1.Power switch:"OFF" is power off,"ON" is power on. 2.DC 5V slot: Use the standard Micro USB charging cable for power charging. 3.USB slot! It can decode and play MP3 format audio when put the USB card into the slot. 4.TF slot: It can decode and play MP3 format audio when put TF card into the slot. 5.AUx line in slot! Use the Mini 3.5 head input through outside devices. 6.Switch mode when play music(USB card/TF card/FM/LINE IN/BT), pre short to switch USB/TF/FM/BT.(switch to"line in" if via AUX cable to audio device).Keep the TWS speaker under BT mode without pairing,pre the "M" key for 3 seconds either of the speaker until hear a hint "du du" for TWS mode,then can paire the mobile. 7.When play music(USB cardTF card/LINE IN/BT)pre short for "play/pause".under BT mode with mobile paired,pre shortto answer a call,pre again to hand up in FM mode,pre short to search station automatically,pre again to stop searching) 8.When play music,Pre short for last song,long pre to turn down the volume. 9.When play music, pre short for next song, long pre to turn up the volume. NOTE:In the FM mode,put in micro charging cable to get better FM radio station. .