Product Description: Convenient, Rechargeable, Waterless and Portable Aromatherapy Nebuliser Diffuser for home, office and/or car use. The whole set includes: 1-Aromatherapy Nebuliser Diffuser 1 instruction manual 1-USB Cable 1-20ml empty bottle Specification: Can fit 5ml, 10ml, 15ml and 20ml essential oil bottle. Need about 5-6hr for fully charged There are 3 options for the atomizing: Low Intensity: Atomize 15S and rest 165S, oil consumption 0.15m/h Medium Intensity: Atomize 60S and rest 120S, oil consumption 0.6m/h High Intensity: Atomize 120S and rest 60S, oil consumption 1.2m/h Notes: 1. Max diffusion area can reach from 60-100m square 2. When fully charged, working time is 72H, 16H, 8H.