* Ambient precautionsAdjust the ambient setting from weak. If you use it with the ambient setting set to raise the volume of external sound too much (medium to strong), it may cause damage to your ears when a loud sound is generated externally.With this app, you can control the earphones and check the temperature inside the ear.◆ Earphone control1. Call noise cancellation ON / OFF (power saving) can be controlled in a total of 5 stages. You can reduce the power consumption of the earphones by setting the power saving mode when you are not talking on the phone, and the battery will last longer.2. Microphone test You can see how your microphone sounds to the other party before a call or web conference. Recording for up to 10 seconds is possible, and the previous data will be erased by pressing a new test button.3. Ambient ON / OFF can be controlled in a total of 5 stages. You can capture outside sound with the earphones on.* The following functions can only be used by corporations that use them for labor management purposes.◆ Ear temperature1. Setting the upper limitIf the upper limit is exceeded, an error alert will be notified to you and the administrator.