260ml 500m³ Bluetooth Ultra-Quiet Intelligent Diffusion Machine The LD500 is a large-coverage smart diffuser designed for commercial spaces such as hotels, clubs, and supermarkets. Centered on an "ultra-quiet design + 500m³ coverage + natural essential oils," it redefines ambient atmosphere with gentle, soothing fragrances. Key Features Ultra-Quiet Operation Innovative ultra-quiet structure delivers operating noise below 38dB—comparable to the sound of dripping water—ensuring