According to the latest Bluetooth CSR2.1+EDR standard; Automatic reconnection ... compact and durable, easy operation; 2,According to the latest Bluetooth CSR2.1+EDR standard;3,Unique hidden touch ... TF card, audio inputs.6,Excellent sound quality, shocked bass, audio transimssion distance within 20 meters. 7,Supports iPhone, ... or 5V/1000mA power supply 9.Material:ABS The latest portable bluetooth speaker