Feature: 1. Ultra?fine spray particles, large amount of atomization, not wet desktop. 2. Low driving voltage, low power, low impedance, stable waveform, high conversion efficiency. 3. Spray in the middle of the atomization piece, 5?m ultra?fine spray aperture, 740 ultra?dense spray hole number. 4. The anti?oxidation silver layer protection coating process on the surface of the atomized sheet has a long life. 5. Adopts high quality ABS + silicone+ ceramic material, environmental protection. Specification: Item Type: Humidifier Parts Material: ABS + Silicone+ Ceramic Color: As shown in the picture Weight: Approx.8g/0.3oz Voltage: 5V Current: 300mA Power: 2W Aperture: 5?m Number of Holes: 740 Punching Area: ?3mm/0.12in Steel Sheet Diameter: 16mm / 0.63in Outer Diameter of Silicone Ring: 20mm / 0.79in Resonance Frequency: 108KHz (Fixed Frequency) Atomization Amount: ?50ml/h Switch Control: Yes Timing: 4 hours shutdown Package List: 1 x Atomization Plate 1 x Circuit Board 1 x Cotton Swab