Black Bluetooth speaker 6W SD card input/AUX B12 Characteristics Model: B12 Bluetooth version: 2.1+EDR RMS power: 2x3W Maximum distance: 10m Frequency range: 280Hz-16kHz SNR: less than 95dB Distortion: less than 5% Audio inputs: 3.5mm audio jack microSD memory card input Button for answering incoming calls Charging cable included, audio jack cable included Speaker Color: Black Dimensions Length: 18cm Depth: approximately 5.8cm Height: 4.5cm