iRobot Roomba 640 VS. iRobot Roomba 960

8.9 cm - Very low profile design. It can easily clean under furniture

1615 Sq Ft - Can be used in both large and medium sized rooms

900 Pa - Lower suction power compared to other Series 900

With its high efficiency filter that captures 99% of pet hair, allergens and dust - Roomba 960 can be used in homes with Pets.

The Multi-Surface Tangle Free Rubber brushes will sweep and remove dust that is found in corners and on wall edges.

75 minutes – not too good but moderate.

1 hour and 30 minutes – takes longer to charge and battery does not last for long

Types of carpets it can vacuum include: low-pile, medium-pile While the Type of floors it can clean include; hardwood, vinyl, marble tile, ceramic tile, laminate, linoleum

Since its battery life is 75 minutes, it might not be in position to vacuum a large area without Auto docking and recharging the battery. It will always detect a drop in battery charge and take its self to the charging station.

True, after recharging, the robot will resume with its cleaning task starting from where it ended. It follows a cleaning map and always saves it when its heading for auto recharging.

Uses the iAdapt 2.0 Navigation with vSLAM technology to map its environment making it easier to clean from room to room.

With its Smart Navigation Sensors, Roomba 960 will easily detect cliffs and objects thus avoid them in advance - saving it from accidents that could result into serious damages.

65 db - makes some little noise but it is not that irritating.

Features a High-Efficiency Filter which captures 99% of allergens, pollen, and dust as small as 10 microns

Uses the iAdapt 2.0 Navigation System to map and plan its routes on the entire floor. You can easily see this map on your smartphone using iRobot App.

With the help of the Spot Cleaning Function, you will be in position to command the robot to concentrate on areas with lots of dirt. The robot will spin over that area to ensure that its 99% clean.

It auto docks, recharges and resumes with its cleaning tusk without need for help. Once it gets full, the full bin indicator alerts you to empty the bin.

You can control it with iRobot Mobile App. Create cleaning schedules while on the Go. Check out its mapped route – know which areas have been cleaned.

It is Wifi Enabled – This makes it easier to control the device using Amazon Alexa Voice Control Device.

Supports Amazon Alexa Voice Control Device

600 ml – quite large compared to other models. But remove very large debris from the floor to avoid quick fill-up.

This model is designed to clean under furniture that is 3.6 inches tall. It can clean under the table, sofas, toe kicks, and other hard-to-clean areas.

2600 mAh - Not too powerful and not too weak. This robot might not do well on very thick carpets that require maximum suction power.

600 ml - bigger than most robots. You might not need to empty the bin often.

Comes with 1 Dual Mode Virtual Wall which you can use to prevent the robot from reaching certain areas.

13.8 x 13.8 x 3.6 inches

8.6 pounds

• It seamlessly navigates room to room to clean an entire level of your apartment • Can be scheduled with iRobot HOME App • Compatible with Alexa • Has a bigger dust bin of 600 ml • HEPE Filtration system captures and eliminates 99% of dust mites and allergens • Ideal for homes with Pets • Comes with a Virtual Wall which prevents it from accessing specific areas.

• Poor battery running time • Charges for longer hours • Low suction power