Three pieces of this microphone was purchased in Deira (Dubai) in March, 2017.
Two are sold out and the here is the last, which has a double hand held wireless Microphones is a high precision quartz crystal locked frequency technology. It is a wireless tool that can be set up quickly and use confidently.
Manual is attached with the package and you can read more on the underlisted features below:
Wide frequency response, high s/n ratio, High precision quartz crystal locked frequency technology, Resist disturbing strongly, limit noise output, No hitting when putting in the switch, so can protect the Amplifier and speakers., With a wide using range for over 200meters, With a complete working state and power level indication.
A double -way channel design two hands holding each two microphone at the same time to sing without any disturbing caused by. Professional wireless microphone system.
All other information and procedures for operation are clearly stated in the manual