Support Bluetooth and wireless transmission. Built-in Microphone， you can enjoy hand-free call.Adopt high quality audio decode chip， it gives you perfect sound quality. Suck on back side of iPad or other tablet become a stand.Built-in charging battery and Microphone with high sensitivity， you can enjoy music any where.Special suction cup design， it could suck on any flat surface including desk， wall， window.Suitable for car， bedroom， wash room， kitchen， office， conference， business trip， vacation etc. Model: BTS-06Color: blackMaterial: ABSSize: about 8.5 x 5.5 cm Waterproof grade: IPX4 (Against daily water splash)Parameters:1. Buttons/Interfaces: ON/OFF Button， 1 x DC 2.5mm USB Interface， Play/Pause， Previous/Volume-， Next/Volume+， Talking key.2. Working Voltage: DC 5V 2.5mm 3. Bluetooth Version: V2.1 support EDR protocol.4. Working Distance: within 10m5. Built-in Lithium Battery: not removable chargeable lithium battery. (with USB cable for charging)6. Function: microphone， handsfree answer and call， wireless bluetooth speaker playing audio files， super sucker function， speaker volume will display on screen while connected with iPhone.Bluetooth Connecting Introductions:1. Please ensure the device in use is bluetooth supported 2. Please confirm if the speaker has power or not. When you switch it to the on position， there will be a sound of "Ding-Dong" and the indicator lights up. Then search with your device and pair. If it is successfully connected， there will be a "Ding-Dong" voice prompt.Notice:Due to the differences of device performance and low version， it differs depending on your own device. Package:1 x Bluetooth speaker 1 x USB cable 1 x User manual In original package