High quality metal mesh. Bright colors and High bass response • Standard mobile TF Card slot for MP3 playback • Auxiliary In (Line In) to connect to phones without Bluetooth • FM Radio with internal antenna • Long Range Bluetooth 4.0 • Built-in Microphone & Bluetooth Handsfree for making/receiving calls • Standard Micro-USB charging connector • Battery Life 4-9Hrs • Charging Time: 2-3Hrs • Signal to Noise Ratio : >80db • Bluetooth Distance: >10 meters • Dual large 50mm speaker with vibrating membrane • Size: 10.7 x 10.7 x 5.1 cm Ultra compact design, Super bass response, Touch button control,Stylish new appearance, standard carabiners, key control Bottom with silicone pads, convenient fixed on the smooth surface. CONNECTIVITY : Bluetooth , Aux , Memory Card Slot. Auxiliary In (Line In) to connect to phones without Bluetooth Brand AB Tech SKU AB411EL1FF2W0NAFAMZ-68168 Model S307