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1. light and convenience. high clarity
2.180 adjustable angle turned.
3. dustproof loudhailer
1. get a right and safe position for the phone holder.
2. put your mobile on the phone holder firmly and fix it on.
3. plug the main unit into the cigarette socket.
4. clamp the vioce pick-up clip onto the ear phone position of your mobile phone
5. plug in the earphone jack at the side of main unit for privacy conversation.
6. DC voltage variation 12-24 V