... .SD/MMC card read headset 4.Pure sou Bluetooth headset with mic/fashion headset/headphone FM/Adjustable headset-EJ 288bluetooth card read ... equip:Headset, charger, a battery, a 3.5 plug wire with microphone, an USB cable , a manual, color box packagingSupport capacity ... connecting wire, it can also be used as a headset with microphone. Specification:Speaker:Φ30mmSensitivity:115dB S.P.L at 1KHzImpedance ...