Color: Youth Edition, Professional EditionBattery capacity: 5200mAhMaterial: Aluminum alloyWeight: 192gBare metal size: 58mm * 58mm * 114mmWorking mode: fast drying time: 15 minutes                        Powerful mode time: 30 minutes                       Hand-held sterilization mode: 5 minutes, only the flagship versionEndurance: 1 charge, rapid evolution of 4 pairs of shoes (8 shoes)Fan: Gentle silent fanNegative ions: >3×106/cm3 (negative ion release head is 10cm away from the inlet of the negative ion tester)Youth Edition: only for the sterilization of shoes for 20 minutesProfessional Edition: Hand-held sterilization, 2 minutes sterilization