Efitty HiFi Bass Mini Portable Wireless Bluetooth Speaker Set 15 Hours Play Time with Mic,3D Stereo Surround Car PC Pill Mp3 Speaker. 3D Stereo 2.1 Channel,Equipped With Two 45mm Neodymium Iron Boron Drive Unit Speakers,Full Wide Frequency Output, High-frequency Crisp Sound, Medium-frequency Full And Mellow Sound,Low-frequency Shocking Bass Sound,Surround High Fidelity Super Bass Real Stereo Sound Effect. Built-in Two 600mAh Rechargeable Lithium Battery (1200mAh),Super Long Standby Time,Music Play Time & Talking Time Up To 15 Hours.Support AUX Line-out Music Play Mode,you can use a standard 3.5mm audio cable connect the speaker to mobile phone or Tablet PC to play music. NFC Smart Pairing:If Your Devices Has NFC Function, You Just Need A Gentle Touch To The Speaker Can Achieve NFC Pairing, One Touch: Connected, Second Touch: Disconnected, Very Convenient . Built-in High Sensitive HD Omnidirectional Microphone, Allow You To Answer Incoming Phone Calls Directly On The Speaker, Even When You're Driving, Free Your Hands, More Safety. Classical Knob Style Button, Back To The Simple But modern Stylish, Delicate Touch, Integrated Powerful Functions: Volume Control, Songs Switch, Play & Pause, Answer Phone Calls.