BT-SD-20

Professional TF/SD card bluetooth headset Version: V2.1+EDR Sensitivity: 108dB Impedance: 32 Ohms Frequency: 20Hz—20KHz working time: 8 hours Speaker: 10mm Receiver rangE: 10m Rated power: 10mW S/N ratio: 82db Introduce: wireless headset with TF/SD Features: Portable bluetooth headset, support micro SD card. Double damping balancing technology, present perfect music. Unique neck-strap design for easy carrrying, good choice for using in car or outdoors. Easy magnetic earphone