Mammoth Serenity essential oil diffuser makes getting the benefits of aromatherapy easier than ever. Safer than oil burners and gentler to the senses than applying oils to the skin, our aromatherapy diffuser releases small amounts of essential oils into the room according to your configuration. Choose continuous dispensing to get the benefits of essential oils for headaches and other acute concerns, or choose the 2 or 3-minute delay options to have the fragrance added periodically to keep the scent noticeable but subtler. Modes: There are 3 options to control misting and estimated time duration (at max level): Option 1: Continuous On (3 hours max) Option 2: On/Off every 2 minutes (4.25 hours max) Option 3: On/Off every 3 minutes (5.50 hours max) This diffuser holds 135mL and is consider a personal size diffuser that last 3-5 hours max. Mood Light Adjustable mood light color and setting. Intelligent LED Indicator LightsThe Mammoth Serenity diffuser will automatically shut off when low water and flashes LED to indicate water is low. The diffuser will also flashes LED to indicate timer mode to distinguish off vs paused. Instructions: We have updated the instructions to be more specific because of our past Amazon feedbacks (sorry previous customers!) and have created a 3 minute video explain exactly how to fully use the diffuser! Warranty: 1 Year Limited Warranty & Lifetime Customer Service. Visit our website for 24/7 tutorials and instructions, or you can contact us by email and phone.