Ultrasonic Aroma Mute Humidifier Mini Essential Oil Diffuser Air Purifier for Home Office Features: Application area:21-30 square meters Using time:20h Atomization, humidification, aromatherapy, purification. Home, office, aromatherapy humidification. Can add essential oils, aromatherapy oils, etc., water-based. Specifications: Color: Light wood grain/Dark wood grain Material: ABS+PP Size: 145*145*135mm/5.70*5.70*5.31&amp;quot; Style: Ordinary/Bluetooth Voltage: DC-5V Power: 4-8W Water tank: 400ml Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow slight measuring deviation due to manual measurement.