Features:- Cylinder shape LED lighting creates a wonderful atmosphere by pulsing to the music melodies- Bluetooth wireless design for connecting to any Bluetooth enabled smart devices- Built-in 500mAh rechargeable li-ion battery supplies 4hours music time- Two high-performance drivers and a built-in bass port bring about a clear and surging listening experience- Very easy to set up and use， your Bluetooth is ready， your music is ready- Play music directly from cell phone/ TF card/ Tablet PC / USB- Two slip resistant rubber outsoles create a safe music playing environment - Speaker: 52mm 5W NeFeB magnetic speaker- Built-in microphone allows you to answer your calls in a hands-free way ( effective distance 50cm )Model: X2 Design: Mini，Portable，Stylish Compatible with: iPhone，Mobile phone，Tablet PC，TF/Micro SD Card Supports: Bluetooth，Hands-free Calls，LED Shinning，Microphone，Remote Control，TF Card Music Playing，Volume Control Functions: Stereo Connection: Wireless Interface: 3.5mm Audio，Power Charge Port，TF Card Slot Audio Source: Bluetooth Enabled Devices，TF/Micro SD Card Material: Plastic Color: Black，Blue，Green，Purple，Red，White Bluetooth version: V2.0+EDR Protocol: HFP Audio File Format: MP3，WAV，WMA TF Card Extension: 32G to the Max.(Not Included) Transmission Distance: W/O obstacles 10m Speaker Impedance: 4 ohm Power Output: 5Watts Standby time: 20hours Freq: 150Hz-15KHz S/N: More than 85dB Distortion: Less than 0.5 percent Power Source: Battery Input: 5V Speaker Accommodation: Button Charging time: 2hours Lasting Time: 4hours( Max. volume ) Battery Capacity: 500mAh Battery Type: Built-in Li-Polymer battery Package weight: 0.478 kg Product size (L x W x H): 18.50 x 7.50 x 7.00 cm / 7.28 x 2.95 x 2.76 inches Package size (L x W x H): 19.50 x 8.70 x 8.00 cm / 7.68 x 3.43 x 3.15 inches Package Contents: 1 x X2 Bluetooth Speaker， 1 x Micro USB Charging Cable， 1 x 3.5mm Audio Cable， 1 x English Manual