This is an omnidirectional earset microphone,delivering excellent sound quality,it's ideal for corporate presentations,house of worship,conferencing and live sound reinforcement. A mini capsule making it perfect for users to have low-profile appearance. With ultra-lightweight,comfortable.flexible design,it's stable and easy to place over the ear. Professional Industry standard sound quality along with surprising durability make this mini headset microphone ideal for almost any vocal sound and speech applications. It answers the demand for affordable, innovative and reliable headset over the ear microphones. Lightweight, Comfortable & Durable This headset's ergonomic, flexible and thin design gives you freedom of movement and exceptional performance for any occasion. Omnidirectional electret condenser mic ensures clean & clear audio and vocal pickup. Durable thin-metal frame designed to fit comfortably for users wearing glasses, hats, or headphones. All-in-One Sound Solution Discreet, durable and affordable, our headset mic makes an ideal essential for any professional in need of reliable vocal amplification. Use for lectures, speech, stage, theater, church, school and beyond! Read more Read more · Product Parameters Polar Pattern Omni-directional Capsule Diameter Φ4.0*1.5mm Sensitivity -32dB±2dB SNR ≥68dB Frequency Range 100Hz - 20KHz Output Impedance ≤2.2KΩ Standard Operation Voltage 2.0V-10V.DC Cable Length 1.2meters (47.24 inch)