Features: Large LCD backlight display for optimal viewing comfort, can be as a mirror.  A button multi-function button.  With MIC port, much fun for happy hours meeting with friends together.  Hi-Fi stereo sound quality. Play music in multiple modes, Bluetooth sound processing, high-performance built-in microphone with echo cancellation and noise suppression technology which can offer you clear talking and wonderful music.  Built-in Bluetooth 4.2 wireless transmission, suitable for use with any Bluetooth enabled smart phone or device.  Support playing MP3 songs stored in the TF card.  Supports: Bluetooth, Hands-free Calls, Loudspeaker, Time Clock, Alarm Clock, Microphone, Volume Control, FM automaticly search channels. Functions: AUX Function, Noise Cancelling, Resonance, Songs Track, Stereo.  Specification: Color: Black, Green, Red, Gray Interface: 3.5mm Audio, Micro USB, Microphone, Power Charge Port, TF Card Slot, MIC Port.  Material: Plastic.  Bluetooth Version: 4.2.  Charging Voltage: 4.8-5.2V DC.   Working Voltage: 3.7-4.2V DC.  Working Current: 300mA.  Quiescent Current: >1μA. Battery Capacity: 1200mAh.  Receive Range: within 10 meters.  Max Power Output: 5W.  Speaker Impedance: 4 ohm.  MIC Sensitivity: -32dB.  Receive Sensitivity: Better than +82dBm.  Data Transmission: Up to 3Mbps.  UART Data Transmission Rate: 115200bps.  Frequency: 2.402-2.480Ghz . Size: Approx. 71x61x71mm/ 2.80x2.44x2.80".  Package lncluded: 1 x Bluetooth Speaker 1 x USB Cable 1 x Audio Cable 1 x English Manual