AEM-500 is helpful for the absorption of skin care products, muscle relaxation, facial fine lines improvement and v-face lifting. It will be more effective if it can be used every day.

AYes, EM-500 is a device with high safety. The time of daily use doesn't need to be strictly regulated. Generally speaking, 5-10 minutes is more appropriate.

AAfter fully charged, NS-100 can be used 80~100 times, 30 second per time.

ANS-400 & NS-100 have the same function, but the volume of water tank and the capacity of lithium battery between NS-400 & NS-100 are different.

ANS-400 atomizing hole may be blocked

ANS-400 is using a lithium battery with a battery capacity of 600mah

AIt is not recommended to keep using for such a long time, The default service period is 30 seconds. If it is necessary to extend the service period, just restart the sliding cover after 30 seconds

AYes

AIt is not recommended to use tap water and water solution containing impurities to avoid blocking the atomization hole; it is better to use general mineral water