Features: Wireless microphones have outstanding layered sound output,provided a for stronger clearer signal and better sound quality,reducing the possibility of interference and dropouts. Ensures maximum gain before feedback and makes your voice cut through any mix. Portable wireless microphone system; Anti-oxidation and anti-fall metal for head; Intelligent noise reduction; Specifications: Material:Metal Color:Black Microphone Size:Approx.25x5cm/9.84x1.97in Receiver: Port:6.5mm Receiving method: automatic selection training to accept Oscillation mode: Quartz control Sensitivity: When the offset is equal to 40KHz, drive into 6dBmvs/n Great than 80dB Harmonic interference ratio: Great than 80dB Artifact interference ratio: Great than 70dB Handheld microphone parameters: RF output power: 10mW Harmonic radiation: Less Than -55dBc Less Than - 40dBc Maximum input sound pressure: 130dB RF stability: 0.005% (-10℃-50℃) Package Includes: 2x Microphones 1x Receiver 1x Charger 1x Cable 1x Manual note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.