Dyson V12 Detect Slim review

The Dyson V12 Detect Slim is the pick for people who found a corded upright too heavy to carry upstairs. Dyson lists it at 4.8 lbs, and it switches on with a button press rather than a held trigger, which makes long sessions easier on the hand. A piezo sensor counts and sizes the particles it picks up, an LCD screen shows the result, and in Auto mode suction rises or falls with dust levels. Two floor heads come in the box: the Fluffy Optic head lights up fine dust on hard floors and the Motorbar head de-tangles long and pet hair on carpet. Dyson says the Hyperdymium motor spins at up to 125,000 rpm and gives 30% more power than the V8, with up to 60 minutes of runtime. It was $429.99 on dyson.com when we checked, down from $729.99. We compared documented features and published prices.

Who it is for

smaller homes that want a light vacuum

Price

$429.99 on dyson.com when checked, down from $729.99.

original price: Was $729.99 current price: $429.99
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Weighs 4.8 lbs and powers on with one button instead of a trigger
• Piezo sensor counts and sizes particles and adapts suction in Auto mode
• Fluffy Optic head lights up dust on hard floors
• Motorbar head de-tangles long hair and pet hair
• Up to 60 minutes of runtime across three cleaning modes

Strengths and weaknesses

• Strength: At 4.8 lbs, one of the lightest vacuums on this list
• Strength: LCD screen shows what the vacuum has picked up
• Strength: Two floor heads included
• Weakness: 60 minute runtime is lower than the Dreame Z30 and Tineco A90S
• Weakness: Dyson does not publish a noise rating on the product page
• Weakness: $429.99 is a sale price against $729.99

Key facts

• Weight: 4.8 lbs
• Runtime: Up to 60 min
• Motor: Up to 125,000 rpm
• Price: $429.99 when checked

Where it ranks

Dyson V12 Detect Slim is No. 3 in our Best Cordless Vacuums verdict.