The Shark Vertex Cordless Stick Vacuum IZ462h, Cordless Pro Vacuum IZ562h and Stratos Cordless Vacuum IZ862h are all battery powered, the main difference between them are as follows:

Wand
The IZ462H and IZ862h use a flexible wand whereas the IZ562h use a straight wand.

Dust Cup
The IZ562h and IZ862h have a larger bin which holds up to 0.72 quarts whereas the IZ462h has dust cup capacity of 0.34 quarts.

Brushroll Design
The IZ462h and IZ862h have two rollers in the nozzle: a roller with powerfins and a soft roller with microfiber, whereas the IZ562h combines the soft microfiber and the powerfins into one.

Power Modes
The IZ462h has Bare Floor,Carpet and Boost mode, whereas the IZ562h and IZ862h has Eco,Clean Sense IQ and Boost mode.
The Clean Sense IQ uses infrared sensor to detect the dirt you can’t see and automatically increases suction power for better dirt pickup. The IZ462H does not have this feature.

Control Type
The Iz462h uses a slider switch to turn on/off and select Bare Floor or Carpet mode, and use a trigger type button to pull for extra power.
The IZ562h and IZ862h use a on/off button and use screen touch to select modes.

LED Display
The IZ562h and IZ862h have LED display with real-time readouts to monitor battery, select suction levels, and engage Clean Sense IQ. While the IZ462h has smaller screen to show only the bare floor or carpet mode is selected.

Max Run Time
The IZ462h and IZ862h run up to 60 minutes whereas the?IZ562h max run time is 40 minutes.

Charge Time
According to manuals, the IZ462h takes 3 hours to fully charged whereas the IZ562h and IZ862h take 3.5 hours.

Odor Neutralizer Technology
The IZ562h and IZ862h have an odor neutralized kit on the nozzle that helps guard against bad odors from debris which was picked up. Whereas the IZ462H does features this kit.

Included Tools
The IZ462h comes with (1) Anti-Allergen Dusting Brush, (1) Pet Multi-Tool and (1) Crevice Tool,
The IZ562h comes with (1) Pet Multi-Tool and (1) Duster Crevice Tool.
The IZ862h comes with (1) Duster Crevice Tool and (1) Anti-Allergen Dusting Brush.

All of them are stick and handheld 2-in-1 vacuum cleaner, have LED headlights, anti allergen complete seal system with HEPA filter, featuring Shark’s self cleaning brush roll design.

For more comparison info, you can read the table below:

For more details about these Shark battery powered vacuums, you can download user guides from official site, here are the links if you are too busy to find yourself:

https://sharkninja.zendesk.com/hc/article_attachments/4727211346460/IZ400_Series_Manual_E_20210311.pdf

https://support.sharkclean.com/hc/en-us/article_attachments/6120553266460/IZ500Series_Simba_3_MPP_IB_MP_Mv8_LR.pdf

https://m.sharkclean.com/include/pdf/manual-iz862h.pdf

Shark HZ602 vs HZ702 what’s the the difference?
Main difference between Shark HZ602 and HZ702 is the floor nozzle, the Shark HZ602 UltraLight Pet Pro Corded Stick Vacuum with PowerFins and Self-Cleaning uses Powerfins brushroll which provides continuous cleaning contact, digging deep into carpets and directly engaging hard floors. The Shark HZ702 UltraLight Pet Pro Corded Stick Vacuum with PowerFins HairPro Odor Neutralizer uses Powerfins HairPro which actively grips and captures stubborn long hair, short hair, and pet hair on carpets and floors. The HZ702 also equipped with Odor Neutralizer Technology that guards against bad odors inside the vacuum for a fresher-smelling home whereas the HZ602 does not have this feature.

The HZ602 comes with a crevice tool, a pet power brush, an upholstery tool, and an onboard storage clip while the HZ702 comes with a crevice tool, an upholstery tool, a Precision Duster, and an onboard storage clip.

Similarities:
25-foot power cord;
self cleaning brushroll;
detachable dust bin;
LED headlights on the floor nozzle;
detachable lightweight hand vacuum weighs less than 3 pounds;
swivel steering for easy maneuvering;
hand vacuum can be hanged from the storage hook on the wand for neat storage;
floor nozzle can be attached to the hand vacuum;
the control panel is located on top of the handheld vacuum;
there are two floor settings: Carpet and Bare Floor;
there is no brushroll off control.

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Shark HZ602 vs HV322
Here are some main difference between Shark HZ602 and HV322 you may want to know before making a purchase:

• HV322 has a much bigger dust cup, it holds up to 0.68 quarts versus 0.35 quarts on the HZ602.
• HZ602 equipped with self cleaning brushroll and Powerfins. According to Shark, the self cleaning brushroll can pick up more hair but reduce hair wrap issues, the Powerfins which uses flexible silicone fins provide continuous cleaning contact, leaving no gaps, digging deep into carpets and directly engaging floors. Whereas the HZ322 does not uses the self cleaning brushroll, and it uses Shark traditional bristle roller.
• HV322 has LED lights on both nozzle and handheld unit while the HZ602 only has headlights on the nozzle.
• Power Specs of HV322 are 120V,60Hz, 500W, 4.2Amps versus 120V, 60Hz, 680W, 5.7Amps on the HZ602.

Similarities:
Handheld and Stick 2 in 1;
detachable handheld unit;
25-foot power cord;
floor nozzle can be attached to the hand unit;
2 floor settings.
For more info, read comparison table below or download manual:

HV320 series manual:
http://sharkclean.com/include/pdf/manual-hv320.pdf

HZ600 series manual:
http://sharkclean.com/include/pdf/manual-hz600.pdf

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Shark Stratos Stick HZ3002 vs Vertex Stick HZ2002 what’s the difference?

The Shark Stratos stick vacuum HZ3002 is a newer model which adds some features that the Vertex stick vacuum HZ2002 does not have.
Below is the main difference between Shark HZ2002 Vertex Ultralight DuoClean PowerFins Corded Stick Vacuum and Shark HZ3002 Stratos UltraLight Corded Stick Vacuum:

• Odor Neutralizer Technology
  The Stratos HZ3002 features the Odor Neutralizer Technology which “effectively deodorizes while interacting with odors from inanimate sources”, according to the SharkClean.
  There is an odor dial on the nozzle, and inside the dial, there is an odor cartridge. This cartridge have fragrance, and it should be replaced every
  6 months for optimal odor neutralizer technology
  performance.
  Whereas the Vertex HZ2002 does not have this feature.
• Anti-Allergen Complete Seal with HEPA filtration
  The Stratos HZ3002 has Anti-Allergen Complete Seal with HEPA filtration to help trap fine particles and allergens inside the vacuum cleaner, and emit fresh air.
  While the Vertex HZ2002 use only foam and felt filters.
• Dust Cup Capacity
  The Stratos HZ3002 has a bigger bin.
  The Vertex HZ2002 has a 0.32-quart dust cup while the Stratos HZ3002 holds up to 0.79-quart.
• Power Specs
  The power Specs of Vertex HZ2002 are 5.7 amps, 680W.
  While the power Specs of Stratos HZ3002 are 5 amps, 600W.
• Weight
  The HZ2002 weighs 9.05 lbs versus 8.68 lbs on the HZ3002.
• Cleaning Path Width
  The HZ2002 has a cleaning path width of 8.11-inch versus 8.25-inch on the HZ3002.
• Accessories
  HZ3002 comes with a Crevice Tool, an Upholstery Tool, a Hair Pro Pet Power Brush, and an Onboard Storage Clip.

  HZ2002 comes with a Dusting Brush, a Crevice Tool, a Self-cleaning Pet Power Brush, and an Onboard Storage Clip.

  Crevice Tool is for cleaning in tight places and hard-to-reach areas.

  Upholstery Tool can be used to remove pet hair, dust, and large debris from delicate upholstered fabrics.

  The Hair Pro Pet Power Brush tackles pet hair and ground-in dirt from above floor areas like carpeted stairs and upholstery, while actively removing hair wrap as it cleans.

  Onboard Storage Clip can be snapped onto the wand to store up to two accessories.

  Dusting Brush dusts and cleans delicate surfaces such as lampshades.

  Self-cleaning Pet Power Brush actively removes hair wrap as it cleans upholstery and carpeted surfaces.

Similarities:

• They are corded and have a 30-foot power cord.
• They have DuoClean PowerFins floor nozzle with self cleaning brushroll.
  The DuoClean PowerFins floor nozzle has two rollers: a soft roller to pull in large particles and fine dust for a polished look on hard floors, and a roller with flexible silicone fins to deliver non stop contact on carpets and floors, result in more dirt collection in every pass.
  Shark claimed that the self-cleaning brushroll will pick up hair without wrapping problems.
• Both have two floor settings. And they have a floor selector button that allows you to press to toggle between Bare Floor and Carpet settings.
• LED User Interface
  Have LED Display that makes it intuitive when changing cleaning modes.
• 2-in-1 design: can be used as a handheld or a stick vacuum.
• Bagless.
• Have washable filters.
• Removable dust cup for emptying.
• Hand unit can be hooked onto the wand for storage.
• Carry 5-year limited warranty.

Questions and answers:

• Do they have On/Off control or trigger type control?
  They have On/Off power button. You don’t have to keep pressing a trigger.
• Do they stand upright by their own?
  No. When not in use it will need to be leaned against something or the hand unit need to be stored on the hook on the wand.
• Do they have headlights?
  Yes, there are headlights on the nozzle. But no lights on the hand unit.
• Are the filters washable?
  Yes.
• Do they have a wall mount?
  No.
• Can you turn off the brushroll when cleaning delicate surfaces?
  No. The brushroll spins in both carpet mode and hard floor mode.

Download manuals to learn more:
https://sharkclean.com/include/pdf/manual-hz3002.pdf
https://sharkclean.com/include/pdf/manual-hz2000.pdf

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Shark HZ602 vs HZ3002 what’s the difference?
The main difference between Shark HZ602 and HZ3002:
the HZ3002 equipped with HEPA filter and Anti-Allergen Complete Seal Technology while the the HZ602 does not;
the HZ3002 has a much larger bin which holds up to 0.79 quarts versus 0.35 quarts on the HZ602;
the HZ3002 has a much longer cable which is 30-foot in length versus 25-foot on the HZ602;
the HZ3002 uses Duoclean which includes 2 rollers while the HZ602 uses single roller;
the HZ3002 uses Odor Neutralizer Technology for a fresher smell whereas the HZ602 does not;
power specs of HZ3002 are 120V, 60Hz, 600 Watts, 5 Amps versus 120V, 60Hz, 680 Watts, 5.7 Amps on the Hz602.

For more info, read comparison table of Shark HZ3002 and HZ602 below:

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Shark HZ602 vs HZ2002 difference?
The main difference between Shark HZ602 and HZ2002:
the HZ2002 has a 30-foot power cord versus 25-foot on the HZ602;
the HZ2002 uses Duoclean – 2 rollers inside the nozzle while the HZ602 uses single roller;
the HZ602 includes a Crevice Tool, an Upholstery Tool, Pet Power Brush whereas the HZ2002 includes a Dusting Brush, a Crevice Tool, and a Self-cleaning Pet Power Brush.
For more info, read comparison table of Shark HZ2002 and HZ602 below: