MTEHFYAF® Desktop Ozone MachineMTEHFYAF Countertop Ozone Unit 99% germ removal rate, effectively reduce formaldehyde, viruses, bacteria and harmful gases to protect your breath. Release ozone group, effectively remove formaldehyde, bacteria, mites and other toxic gases. Good purification effect, no secondary pollution. Model No.: QKU13 QKU13 Ozone output 30g hour Size: 7. 7*6. 9*7. 87 inch Applicable area 30 3000 square feet Cooling method: air cooled Noise: 45dB(A) Input power