... Plug TypeEU, AU, UK, US CertificationCE, RoHS, WEEE Features1 Timing of 30 minutes sterilization to avoid you contact ozone directly.2 ... Humanized design, double-mold of automatic mode/manual mode.3 Without chemicals or any supplies ... the meanwhile, the unit is in intelligent standby status.3. Timing: Automatically stops purification after 30 minutes operation, if you ...