BT-SD-30

stereo wireless bluetooth headset support TF/SD card Version: V2.1+EDR Sensitivity: 118dB Impedance: 32 Ohms Frequency: 20Hz—20KHz working time: 9-11 hours Speaker: 40mm Receiver rangE: 10m Rated power: 20mW S/N ratio: 82db Introduce: wireless headset with TF/SD Features: 1).Over-head desgin brings you comfortable,convience and fashion. 2).Unique and intelligent function let you will not miss any mobile calls during you enjoy music. 3).This headset has strong compatibility,