This is a wireless microphone, which is made of high grade materials, durable and can be used for a long time. Anti-noise filtering technology provides clearer texture and high-fidelity, very practical. The microphone's body is strong and durable. The microphone has and can support long time use. Features -Color: As Shown -Material: ABS -Size: 25.00X4.50X4.50cm/9.82X1.77X1.77inch. - Anti-noise filtering technology provides clearer texture and high-fidelity, very practical. - Applicable to various occasions: home entertainment, outdoor entertainment, conference office, education. - With high definition digital display screen, you can clearly and intuitively see the microphone frequency band, power, signal and other functions. - The microphone's body is strong and durable. The microphone has and can support long time use. - Clear sound quality, built-in anti-noise cotton to improve noise reduction effect. Specification - Battery life: 3-6 hours - Channels: 2 - Signal-to-noise ratio: >=75dB - Working frequency: 1 frequency - Frequency range: CHA/592.2MHz- /596.5Hz - Output impedance: 600±3% 1KHz) - Distortion: <1% 1KHz) -Sensitivity -58±3dB - Receiver battery: Removable lithium battery 3.7V 1200mAh - Transmitter battery: removable 2 AA Package list: 1 x Microphone Receiver 1 x H16L Microphone 1 x Anti-Slip Ring 1 x 6.35mm to 3.55mm adapter 1 x charging cable