Product Description Material The headset microphone is made of high-quality ABS materials that are non-toxic and safe. Feature The microphone arm can be bent to adjust the position and is easy to place on the head. Comfortable and durable. The ergonomic/flexible design gives you freedom of movement for energetic performance for all occasions and delivers loud, clear hi-fi sound. Easy to carry Our head microphone is small and lightweight, comfortable to wear and easy to take with you. Compatibility: Our wired microphone headset is suitable for all 3.5mm aux audio devices. Specially designed for voice amplifiers, compatible with ZOWEETEK SHIDU WINBRIDGE and other voice amplifiers from other brands. Usage tips: 1. Directional microphone, make sure the hole on the microphone (visible after removing the sponge) is aligned with your mouth. 2. The most suitable distance between the microphone and your mouth is 10-15 mm. 3. Make sure the microphone is connected to the 3.5mm MIC jack, not the AUX jack. 4. Do not turn on the power and volume before using the ear hook microphone. 5. Try to avoid repeatedly connecting and disconnecting the microphone to avoid poor contact. Specification: Microphone size: Φ9.7 × 5.2 mm Sensitivity: -52 dB ± 3 dB Direction: Unidirectional Impedance: 2.2 K Operating voltage: 2.0 V Frequency range: 100–16 kHz SNR: greater than 60 dB Plug diameter: 120 cm/47 inches Package includes: 2 x Headset microphone