NT-04 Filter Sponge/10pcs Configuration:10 Filter Pads + 3 Filter Caps Two nebulizer masks were included:

Two nebulizer masks were included: one for adults and the other for kids

5% oxygen concentrationOxygen production method: pressure swing adsorption separation method (PSA method)Noise: ≤45 dB(A)Item Weight: 3

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🔸Upgraded Oxygen Concentration: With a concentration of up to 96%

Continuous Oxygen Supply: Levels 1-6 (max flow rate at 6th level)

NT-04 Filter Sponge/10pcs Configuration:10 Filter Pads + 3 Filter Caps Two nebulizer masks were included:Only Match with Home Oxygen Concentrator NT 04 Please note: 1. These accessories batteries will be shipped separately from the oxygen concentrator, and they usually take 15 20 business days to deliver. 2. The accessories batteries do not apply to the return and refund policy.