description:description: Brand new, unused, unopened, and undamaged items in the original packaging (applicable packaging). Specifications: US plug Material: PVC color: White Method: Ultrasound Voltage: 220V Power: 1-3W Practice range: 70㎡ Frequency modulation: automatic frequency conversion Size: about 5.5x3x9.5 cm/2.17x1.18x3.74 inches Can produce frequency ultrasonic stimulation, effectively control the range of mites. Suitable for families, restaurants, hotels, hospitals, etc(only suit for US). Brand new, unused, unopened, and undamaged items in the original packaging (applicable packaging). Material: PVC color: White Method: Ultrasound Voltage: 220 Power: 1-3W Practice range: 70㎡ Frequency modulation: automatic frequency conversion Size: about 5.5x3x9.5 cm/2.17x1.18x3.74 inches Can produce frequency ultrasonic stimulation, effectively control the range of mites. Suitable for families, restaurants, hotels, hospitals, etc.