High-efficiency ozone negative ion generator with dual working modes with timer to meet your different needs. 360-degree omnidirectional, compact size, light weight and exquisite workmanship. Perfect for bedrooms, wardrobes, bathrooms, refrigerators, offices, cars, etc.Features: High-efficiency ozone negative ion generator, powerful vortex fan, low operating noise. Dual working mode: 20-minute timer mode, 5-minute on + 2-hour off cycle mode. 360-degree all-round design provides you with a fresh and clean living space. Compact size and light weight, easy for you to carry around. Perfect for bedrooms, wardrobes, bathrooms, refrigerators, offices, cars, etc.Specifications: Material: ABS + Electronic component color: White + Gray Power: 3W Ozone output: 120mg Negative ion concentration: 2800W Applicable area: 10-20m2 Built-in battery: 3.7V 2200mAh Lithium battery product size: 11.5 * 11.5 * 4.2cm / 4.5 * 4.5 * 1.7 inches Product weight: 244 g / 8.6 oz Packing size: 15.0 * 12.0 * 4.5 cm / 5.9 * 4.7 * 1.8 inches Packing weight: 287 g / 10.1 oz