250ml Aromatherapy Diffuser Wall Mount Low Noise Nano Atomization for Bedroom Hotel Spa Item Type: Aromatherapy Machine Material: PP Size: Approx. 185 x 77 x 132mm / 7.3 x 3 x 5.2in, wall hanging hole distance 65mm/2.6in Coverage: 180m ³ Function: Aromatherapy Use: Wall mounted Operation Mode: Bluetooth connection mode Capacity (shipped without liquid): 250ml Occasion: Hotel, family, physiotherapy tube, hot spring resort, sauna, spa, KTV, leisure club Problems and Solutions: No Atomization: Check whether the power switch indicates that the toggle is correct. Check if the machine stops atomizing during inactivity If the air pump is damaged, replace it with a new air pump (this step requires disassembling the machine) Check whether the air tube on the machine or atomizing head is loose and falls off. Low atomization: The atomizing core is blocked, clean it with alcohol or replace it with a new atomizing core; If the sealing gasket on the atomizing head falls off or is damaged, replace it with a new gasket; The air tube on the atomized head falls off and is reconnected Oil leakage: The bottle is loose, please install it correctly. The sealing gasket in the bottle atomizing head is damaged or missing. Spray liquid: The atomizing head is damaged, replace it with a new atomizing head, and the machine is tilted or lying flat. Abnormal noise: The air pump is loose, re fix the air pump, the air pump is damaged, and replace the air pump with a new one (this step requires disassembling the machine)Weight: Approx. 765g / 27oz