Two microphones are included in the package: a long-boom microphone for high noise environment and a short microphone for indoor use.
Plug the microphone into the microphone port to fit triangle marks as described in the below picture. Adjust the direction of the long-boom microphone so that the “II” mark on the microphone is pointing towards your mouth.
Since SPH10 is mostly exposed on external environment where noise prevails, microphone can be selected according to the noise level. For the highly noisy environment, boom-microphone is recommended allowing microphone to stay near user’s mouth. For the less-noisy environment, mini microphone is recommended allowing users to move freely.