Wide frequency response, high S/Nratio.
Resist disturbing strongly, limit noise output.
High precision quartz crystal locked frequency technology.
No hitting when putting in the switch, so can protect theamplifier and speakers.
With a complete working state and power level indication.
This is a reliable dual digital microphone system set that is easy to setup and use. It features cordless design, which is convenient to carry and will not restrict your movement, so that you are free from the interference of cluttered lines. It is perfect for stage performance, karaoke, public address (presentations, classes, conferences). Features: Wide frequency response, high S/Nratio. Resist disturbing strongly, limit noise output. High precision quartz crystal locked frequency technology. No hitting when putting in the switch, so can protect theamplifier and speakers. With a complete working state and power level indication. Two microphone works at the same time without anydisturbing caused by. Two microphones are controlled independently and easy to operate.  With a wide using range for over 100m for compandor type or 50m for non-compandor type in a nice surrounding, for 40-60m for compandor type or 20-30m for non-compandor type in a duplicate one. Specifications: Material: Metal Temperature Range: -10℃~50℃ Carrier Frequency: UHF 700-800MHz frequency Steadying: Less than 0.002% Modulating Mode: FM Audio Dynamic Range: over 70dB Audio Frequency Responses: 100Hz-15KHz Audio Output Level: 0-280mV S/N Ratio: over 70bdB T.H.D: Less than 0.5% Sensitivity: 3uV for 30dB S/N Microphone Power-Supply: 2 * AA batteries each microphone (not included) Package Size: 380 * 270 * 60mm / 14.96 * 10.63 * 2.36in Package Weight: 1000g / 2.2lb  Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow 1~5mm measuring deviation due to manual measurement. 3.The shape of power plug will be sent at random. Please understand, thanks. Package List: 2 * Microphones 1 * Receiver 1 * Audio Line 1 * English Manual