Your smartphone’s microphone is not accurate enough for your projects?
Introducing the VoicePro™ Stereo 3.5mm Mini Jack Microphone.

Small  and lightweight;
Directivity uni-directional stereo;
High quality microphone for recording on digital media;
Gold plug for maximum conductivity and minimum noise;
Direct connection to a mobile phone, provides faster, easier recording sessions;
Plug-in power operation, needs no battery.

Specifications:
Left and right channel stereo recording;
Sensitivity: 38 ± 3 dB;
Frequency response: 100-15,000 Hz;
Plug: L-shape gold-plat mini plug, 3.5mm;
Size: 5.5 x 5.7cm /2.17″ x 2.24″;
Color: Black & Silver.

Package content: 1x VoicePro™ Stereo 3.5mm Mini Jack Microphone