3 gallons of output per day. Humidifies 700 sq.ft. 4 speed digital control. Light gray-smoke color. Automatic humidistat. Easy-fill 2.0 gallon water- holding capacity water bottle. Hygrometer. Quiet night time setting. Removable top rack dishwasher safe base. Replacement wick No. SGL 1040 (Ace no. 4014817)