Features: Transform your old speakers into a modern,for smart charming audio system! for: for i Phone,i Pad, And roid for Smart Phones and tablets,for Mac and for Windows laptops,NAS,etc. Allows you to stream music synchronously to different rooms(up to 8 ) for the same song or different songs, for play your favourite music in the whole house at the same for time. M5 provides a for stronger range singnal than other normal Bluetooth-compatible speaker/adapter, you can walk away a far distance as long as it is within the same Wi-Fi network. Offers more useful functions like music alarm,sleeping timer,etc. And easy setup, within minutes you can redefine your home music. Package Includes: 1 Set Audio Adapter Specifications: Power Supply: DC5V 1000mA with Micro USB Analog audio interface: 3.5mm earphone audio output Size: 2.8x6.5cm/1.1x2.56inches note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.