Waterless Aromatherapy Diffuser: No need to add water, just add the oil and turn the knob to start. Compatible with essential oils and comes with 30ml of wooden essential oil ready to use. Charges in 4-4.5 hours for 12 uses of 2 hours each. Smart Quiet Enjoyment: Operates for 2 minutes, then pauses for 1 minute to balance fragrance. Noise level is below 30 decibels, ensuring a peaceful experience for sleep or work, with automatic shutdown after 2 hours for safety. Powerful Diffusion: USB-powered, quickly spreads fragrance over 100 to 1000 square feet. Adjustable fragrance strength to fit your needs. Easy to Clean: Pour in 75 or 95-degree alcohol and run for half an hour to clean easily, keeping the machine like new. Safe Materials: Made from eco-friendly tempered glass and pine wood, safe for children and pets. Versatile Use: Suitable for home, office, studio, bedroom, yoga room, kitchen, hotel, or large spaces to create a fragrant atmosphere. Color: brown Material: Glass and Wood Package Contents: 1 x Waterless Essential Oil Diffuser Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.