Specification: Item Type: BT Essential Oil Diffuser Size: Approx. 16 x 14.8 x 6cm/6.3 x 5.8 x 2.4in (L x W x H) Weight: Approx.532g/18.8oz Mounting Hole Diameter: Approx. 9cm/3.5in Power Supply: Battery, USB (Choose one of the power supply methods) Battery (Shipped Without Battery) : D Battery x 2 1.5V USB Power Supply (Shipped Without USB Cable) : 5V Coverage: 90m³ Function: Aroma Usage: Hanging  Capacity (Shipped Without Liquid) : 100ml Operation Mode: BT, Button Setting Occasions: Suitable for hotel, family, physiotherapy, hot spring Resort, sauna, SPA, KTV, leisure club Problems And Solutions: No Atomization: Check whether the power switch indicates that it is flipped correctly. Check if the machine stops atomizing during non working periods. The air pump is damaged, replace the new air pump. (this step requires disassembling the machine) Check whether the air pipe of the machine or atomizer head is loose and falling off. Package List: 1 x Essential Oil Diffuser 1 x Key 1 x Accessory 1 x Double Faced Tape 3 x Expansion Tube 4 x Screw 3 x Nail 1 x Cap 1 x Manual Features ❤Great Mist Output:Aromatherapy diffuser produces a stronger mist to add more moisture and fragrance to your bedroom, living room, etc. And helps to relax better relieve stress, humidify the air, and improve the quality of the air we breathe. ❤Adjust Gear:The oil diffusers with 10 gears, 90 to 900 seconds stop atomizing time, and meet your fragrance requirements for room space. ❤100ML Capacity:The essential oil diffuser has a capacity of 100ml that provides long-lasting of consistent soothing mist and spreads the aroma in your room effectively, having a quiet operation. ❤Hanging Up Design:With innovative of diffuser oil hanging up design, you can put this aroma diffuser anywhere you want like your bedroom, office, or yoga room, space-saving. ❤Sturdy Material:The shell of essential oil diffuser is made of premium PP material, which is optimized by thickening and strengthening for more durability, ensuring long-term use.