Supports: Hands-free Calls， TF Card Music Playing， Volume Control， Microphone， Bluetooth
Functions: Stereo， AUX Function
Compatible With: TF/Micro SD Card， iPod， MP3， iPhone， MP4， PSP， MP5， Laptop，  Mobile Phone， Tablet PC， PC
Connection: Wireless
Interface: 3.5mm Audio， Micro USB
Audio Source: Electronic Products with USB port， Bluetooth Enabled Devices， TF/Micro SD Card， Electronic Products with 3.5mm Plug
Material: Metal
Color: Green， Blue， Red， Gray， Gold

Please note me which color that you want，or i will send Red color in deafult!! 

Specification:
Protocol: AVRCP， A2DP
Transmission Distance: W/O obstacles ≤10m
Freq: 100Hz-18kHz
S/N: 50dB
Bluetooth Version: V2.1+EDR
Power Source: USB
Charging Voltage: DC 5V
Power Output: 3W
Charging Time: 2 hours
Lasting Time: 5 hours
Battery Capacity: 500mAh
Size (L x W x H): 6.3 x 6.3 x 6.2 cm/2.48 x 2.48 x 2.44 inch

Package Included:

1 x Speaker
1 x USB Cable
1 x 3.5mm Cable