Feature 1 UHF technology is adopted, the remote wireless transmission is easy to operate, and no wire, can reach the maximum distance of 80m. 2 Wider frequency range, less interference, display of your voice easily and perfectly. 3 It adopts tight control of electronic circuits to capture rich, rich sounds from sources directly in front of the microphone. 4 Can be used with 3.5mm and 6.35mm female interface devices, with screen, display frequency/channel and other information. 5 Power USB receiver via USB charger, portable power supply, etc. 6 Suitable for recording studio, karaoke, radio, teacher, live show, meeting, hall, party, etc.Condition: brand newItem Type: MicrophoneMaterial: ABSColor: as picture shownReceiver power voltage: 5vTransmitter operating current: < 80mAOperating current: 80mA (Maximum)Operating frequency: 265.85mhz (fixed)Sensitivity: -50 +/ -3db (0dB = 1 V/Pa at 1dB)THD: less than 0.7%Signal-to-noise ratio: over 110 dbDelay time: less than 5 msFrequency response: 40 Hz ~ 15 kHzPower supply: 2 x AA battery (not included)Operating temperature: -10-50 Package List1 x Microphone1 x USB Receiver1 x 3.5mm Audio Cable1 x 3.5mm to 6.35mm Adapter1 x Manual