Touch Bluetooth Speaker with LED Flashing Light, Support Hands-free Call / NFC Function, Support TF Card, KR-8800 New light touch- key speakers with high sensitivity and distinguish degrees. With Bass diaphragm to strengthen the bass effect. Support USB flash disk and TF card; Playing MP3 format music; With memory function 5c external rechargeable battery which can be recharged, easy to change. 3.5 audio input which can also connect MP3/4, mobile phones, computers at the same time. With digital display Frequency: 50Hz-18KHz Can connect the power, and supply for a long time Loop ontrol: NFC Connect bluetooth, or search the bluetooth name connection Buttons: Touch operation Rechargeable, replaceable battery Compatible with all Bluetooth Devices: iPhone, iPad, Smartphone, Portable Player, Mobile Phone, MP3, MP4, MP5