... Bluetooth speaker for mobile phone ,laptop ,tablet pcMain Function: Mini Bluetooth speakerOutput:(RMS):3WSound system: stereoSpeaker Diameter: 40mmPlayback Media: mobilephone, computer Wireless ... emit "ting beep ting" sounds. 2)Open the Mobile phone Bluetooth device, Press on Speaker’s the" Play/Stop" ... play" interface, then you can play music free. bluetooth speaker for mobile phone,laptop,tablet pc