Bluetooth/USB/FM speaker JK-1104 various colors Characteristics Audio inputs: Bluetooth, SD card, USB FM radio function MicroUSB charging cable included, charging values ​​5V - 500mAh Dual speaker system Bluetooth Version: 5.0 Battery Capacity: 1200mAh Charging time: 3h Usage time: from 2.5h to 4h S/N: 90db Frequency Response: 90Hz - 20kHz With smartphone holder Dimensions: 17x6.6x6.6cm Keys with LED illumination