Manufacturers Price - This is the manufactures retail price. Use this to calculate your savings when bidding or buying a fixed price unit on eBay.

 

Charge Time - This is how long it takes for Roomba to fully recharge after a normal cleaning cycle. A brand new unit, or a unit thats been left uncharged for a long time, requires a 16 hour initial charge.

 

Rooms per Charge - This is the number of average sized rooms the model will clean before recharging is required. Deep pile carpet is not recommended and will reduce this value.

 

Virtual Walls - The number of virtual walls the model comes with. Virtual walls are used to confine Roomba to a specific room or area.

 

X's  - Indicate additional features and equipment the particular model comes with from the manufacturer. Some listings on eBay may not have all these extras, some are used and some are refurbished. Please check the listing's details before bidding. Units listed as NEW should come with the extras indicated above.

 

Detects Dirt - If Roomba detects an very dirty area, it will spend more time cleaning that area.

 

Spot Mode - Roomba will spiral out approximately 3 feet in diameterfrom where it's placed and then spiral back to where it started, intensely cleaning a localized area.