Advanced Design with LED: With 2 speeds for both adults and children. The machine also features a user-friendly LED screen that makes operation and monitoring easy with timing and battery Display Efficient Mist Particles: This portable nebulizer features mesh technology to produce an ultra-fine mist with particles ≤5μm, ensuring smooth delivery for a comfortable experience. Rechargeable Battery: With its built-in lithium-ion battery, it enables you to carry it effortlessly wherever you go. The battery reaches full charge in just 3 hours and provides an impressive 6-hour continuous runtime, ensuring you stay powered up for extended periods. Auto-clean Mode: This handheld nebulizer supports dual power modes (battery & USB). Long press for self-cleaning mode to easy to rinse after each use-ensuring long-lasting, clog-free performance at anytime and anywhere. Silent Operation: Engineered for ultra-quiet performance, runs with negligible noise, creating a serene environment at home. It seamlessly integrtes into your daily routine, allowing you to go about your activities undisturbed and maintaining a peaceful ambiance. OTC Spacer