Feature:1. Dual high definition speaker drive units, 2.0 Two-Channel 360 degree surround super bass and stereo sound effect, feel the shocking bass of the music.2. Extremely long standby and using time, the talk time / playback time up to 12 hours.3. Built-in sensitive microphone, handsfree support to answer incoming phone calls even when it play music or when you’re driving, it’s very convenient.4. Built-in Card Slot and Flash Drive Slot, Support TF Card / Flash Drive Play Mode, Even You Do Not Own A Device With BT Function, You can Also Insert A TF Card With Songs Downloaded To Play Music .Specification:Features:Dual high definition speaker drive units, 2.0 Two-Channel 360 degree surround super bass and stereo sound effect, feel the shocking bass of the music.Extremely long standby and using time, the talk time / playback time up to 12 hours.Built-in sensitive microphone, handsfree support to answer incoming phone calls even when it play music or when you’re driving, it’s very convenient.Built-in Card Slot and Flash Drive Slot, Support TF Card / Flash Drive Play Mode, Even You Do Not Own A Device With BT Function, You can Also Insert A TF Card With Songs Downloaded To Play Music .Support AUX Line-out Music Play Mode, Audio Cable Connect The Speaker To Mobile Phone Or Tablet PC To Play Music.Specifications:Color: blackSize: 430*65*65mmBT Version: V5.0Frequency Response: 70Hz—18KHzCell Capacity: 2000mAhPlay Time: Up to 12 hoursAudio Output: 8W*2Packing List:1 * SpeakerPackage List:1 * Speaker