Waterless Essential Oil Diffuser with 4 * 20mL Hotel Scent Fragrance Oil, Battery Operated Mini Scent Air Machine Portable Diffuser for Home Car Office

["Essential oil set: includes 4*20ml hotel-grade essential oil sets","Waterless Operation: Utilizing ultrasonic technology, this diffuser operates without the need for water, ensuring hassle-free use.Compared with traditional essential oil diffusers, it is more environmentally friendly and more convenient","Portable Design: Compact and lightweight, this essential oil diffuser is perfect for use in cars, offices, or homes.Built-in 20ml large-capacity essential oil bottle, compatible with most 5/10/15/20ml essential oils in the US market","Battery Powered: Equipped with a built-in rechargeable battery, allowing for cordless operation and easy portability.The built-in lithium battery provides up to 48 hours of runtime. Charge it anywhere with a standard USB-C Cable。Note: Please plug in the power source to charge before first use.","Timing Function: Adjustable timer settings allow you to customize the diffusion duration for your desired ambiance.The touch controls include 3 intermittent mist settings (work 10 seconds, rest 170 seconds, work 30 seconds, rest 150 seconds, work 90 seconds, rest 110 seconds) and 4 timer settings (1/2/3H Auto Shutoff & continuous work)"]