Same as the Cigar Oasis XL, the basic difference is a change in the air flow and water cartridge which allows the Cigar Oasis XL Plus to pick up more moisture and thus provide more rapid humidification, especially for larger personal humidors, chests, & end tables. The cartridge is a refillable. Low water & battery indicator. Built in hygrometer. Approx. size: 3" high x 2" wide x 6" long Capacity 8-10 cu ft.

 Cigar Oasis II Electronic Humidifier - Measures and reliably controls the humidity in personal size cigar humidors over long periods of time. Guaranteed to keep your cigars in perfect condition. Featuring: Totally unattended, reliable operation; Uses only 100% distilled water no chemicals; Water reservoir is user refillable; Built in filtration and mold retardant; Set to maintains the humidity at 70% or user adjustable humidity from 60-80% humidity; Includes circulation fans to maintain uniform humidity; Suitable for large humidors, armoires, display cases, etc. 100 cubic feet; Overall dimensions only 6 1/2" wide x 5 1/4" high x 13" long; Adapter plugs into any standard power outlet; Standard adapter 120VAC - Optional 240VAC. A larger humidifier for display cases, armoires, end tables etc. Cigar Oasis II uses the exact same technology as Cigar Oasis I, with a larger refillable distilled water reservoir. It is a self contained unit with the electronics in the upper section and the distilled water reservoir in the lower section ready to operate once you fill with water and plug it into a socket. A unique sensor measures accurately the humidity in the humidor and the signal is used to operate a control fan which returns the humidified air back to the humidor. A second fan is on all the time to assure that air is always moving in the controlled space. Comes with manufacturer's one year warranty.