... :8 hours 3.fashionable design Bluetooth speaker for mobile phone ,laptop ,tablet pcMain Function: Mini Bluetooth speakerOutput:(RMS):3WSound system: stereoSpeaker Diameter ... 't loosen it.At the same time, Mobile phone searches the Bluetooth device. When mobile phone screen show "K168", loosen "Play/Stop” ... " interface, then you can play music free. bluetooth speaker for mobile phone,laptop,tablet pc