1、It is made of high quality material, stable and durable. 2、Easy to Operate: Simply connect your speaker with our device, immediately turn the speakers into an elegant wireless Bluetooth speaker. 3、Wireless Game: Remove the issues of wired connection, through wireless connection and transmission, enjoy high-fidelity music anywhere covered by wireless control. 4、Perfectly Compatible With: Our products can be compatible with almost 95% of cell phone or computer in the market. Support for iPhone and most types of smart phones. 5、Portable design: With mini size, the portable feature can let you take it anywhere you want. Features: It is made of high quality material, stable and durable. Easy to Operate: Simply connect your speaker with our device, immediately turn the speakers into an elegant wireless Bluetooth speaker. Wireless Game: Remove the issues of wired connection, through wireless connection and transmission, enjoy high-fidelity music anywhere covered by wireless control. Perfectly Compatible With: Our products can be compatible with almost 95% of cell phone or computer in the market. Support for iPhone and most types of smart phones. Portable design: With mini size, the portable feature can let you take it anywhere you want. Specifications: Material: ABS Size: Approx. 5.5*2*1cm/ 2.17* 0.79* 0.39inch Color: Black Bluetooth Version: Bluetooth 4.0+EDR Support A2DP V 1.2 Powered by 5V DC Transmission Rate: 3Mbps Transmission Distance: Approx. 10m/ 32.81ft Power mode: USB-POWER Package list: 1 x USB Bluetooth Audio Music Player 1 x 3.5mm Audio Cable Note: Step one: To No USB Port Speakers: Power Supply to the device by connecting the charger with 5v USB interface, then connect the Speaker AUX port with the audio cable. For Speakers with USB Port: Connect the device with USB port directly from the speaker, then connect the Speaker AUX port with the audio cable. Step two: Turn on the Bluetooth function of the computer, mobile phone or other device that has Bluetooth function, looking for the H-163 device to connect and input: 0000 to match when the device is in the match mode. After matching success, the indicator light will slowly flash. so you can use for the iphone and other bluetooth transmitter devices to play music.