Nalmoe MST-A1S - wired

Specifications: Speaker Sampling Frequency: 24Khz~48Khz Mic Sampling Frequency: 16Khz Speaker: 4Ω 3W USB Cable: DC 5V 500mA, 3 meters long Mic: Dual-condenser Omnidirectional Mic -Sensitivity: -34 ± 3dB -Frequency: 100~10,000Hz -Impedance: ≤2.2KΩ -SNR: ≥58dB -Max. Sound Pressure Level: 95dB -Max.t Consumption: ≤0.5mA Echo Cancellation: Max. 256ms Reverberation Time: ＜0.5s Product Noise: ＜48dBA Audio Processing: AEC/AGC/NR/NLP/ALC System Environment: Compatible for Windows 8/7/VISTA/XP/2000, for/ iOS / Android Interface: 3.5mm Audio Input for Mic, 3.5mm Audio Output for Loudspeaker,one Audio Port, USB Port Item Size: 11.5 * 11.5 * 3.5cm / 4.5 * 4.5 * 1.4" Item Weight: 407g / 0.9Lbs Package Size: 27.5 * 24.3 * 9.8cm / 10.8 * 9.6 * 3.8" Package Weight: 896g / 2Lbs Package List: 1 * Conference Microone Speaker 1 * USB Cable 1 * Audio Cable 1 * Quick Start(English) Note: Computer and smartone are not included.