How long does 300mL last?

Expect a few hours to under a night at typical output. Small tanks like this usually need a refill every 4 to 8 hours, so check the stated runtime before buying.

Is it quiet enough for a bedroom?

Ultrasonic humidifiers are generally near-silent apart from a faint gurgle. This one should not disturb sleep.

Does it need distilled water?

Ultrasonic models can leave white dust from hard tap water. Distilled or filtered water keeps the mist clean and the unit cleaner.

What happens when the water runs out?

The automatic shutoff cuts power when the tank is empty, so the unit should not run dry unattended.

Is it worth it over a larger humidifier?

Only if you need mist in one small spot. For a full bedroom or a dry winter, a 1-gallon or larger tank means far fewer refills.

Great Choice Products 300mL Cool Mist Humidifier with Night Light

Q: Where can I buy the Great Choice Products 300mL Cool Mist Humidifier with Night Light?

2 stores we checked sell it, including eBay, Sears.

Last price we saw

$21.14at Sears, last seen Nov 4

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Our take on the Great Choice Products 300mL Cool Mist Humidifier with Night Light

A small ultrasonic humidifier that holds 300mL of water and doubles as a night light. It runs on cool mist, has a filter, and shuts off automatically when the tank runs dry. The 300mL tank is tiny, so expect to refill it often and to use it on a desk or nightstand rather than in a large room. No current price was provided, so compare it against other mini humidifiers before buying.