There are 3 models for you to choose, please choose suitable model before purchase.
2-in-1 (Mic&Earphone) * 1 , Microphone * 1 , Earphone * 1
Frequency Range：15Hz – 25KHz
Other functions：Silence switch, Volume adjustment
Cable length: 10cm
The standard of the microphone is OMTP, part of the microphone can’t work if the standard is CTIA, Such as iPhone earphone and the Three-piece headphones.
(4). The input of microphone jack and combo Mic/headphone jack only support mono