Tineco's Floor One S7 series has many modifications; let's talk about the two of them.
Tineco Floor One S7 Stretch Ultra versus S7 Master
| Specs/Models |  Floor ONE S7 Stretch Ultra |
 Floor ONE S7 Master |
|---|---|---|
| Price | $499.0 | $649.0 |
| Specs | ||
| Clean water tank size (CWT) | 1,000 ml | 800 ml |
| Dirty water tank size (DWT) | 720 ml | 750 ml |
| Suction | 21k Pa | 23k Pa |
| Run time | 50 min | 65 min |
| Weight | 11.3 lbs | N/A |
| LED | no | yes |
| Cleaning Mechanics | ||
| Storage | Minimalist Charging Dock | Minimalist Charging Dock |
| MHCBS Technology | yes | yes |
| solid-liquid separation | yes | yes |
| SmoothPower | yes | yes |
| Brush Type | DualEdge | TripleEdge |
| Hyper-Stretch | yes | yes |
| Height when flat | 5.1 | 3.9 |
| Filtration & Self-Cleaning | ||
| Filtration | HEPA | HEPA |
| Self-cleaning | FlashDry | FlashDry |
| FlashDry temperature | 185°F | 185°F |
| Full-Path cleaning | yes | yes |
| Smart Features | ||
| Display | yes | yes |
| Dynamic display | - | CrhromaGlow Light Display |
| Thumb screen | no | yes |
| DWT emptying alert | yes | yes |
| CWT refilling alert | yes | yes |
| Cleaning modes | Auto, Max, Custom, Suction | Auto, Max, Suction |
| iLoop smart sensor | yes | yes |
| App | yes | no |
Smart technology explained
iLOOP technology adjusts cleaning settings on messy areas.
MHCBS: continuously keeps the roller clean.
Hyper-Stretch lies flat to reach under furniture.
SmoothPower: smoother movement, easier to use.
Flashdry technology completes a cleaning cycle in 5 minutes. The roller is fresh and dry, and is ready for another cycle.
Full-path self-cleaning washes and dries the whole machine after cleaning.
The self-drying cycle takes 5 minutes, and the cleaner is ready to go for another round.
No need for manual maintenance.
Good value
Key features:
- Bigger CWT
- App connectivity
Floor ONE S7 Stretch Ultra
Lies flat | Advanced hair resistance
Cheaper alternative to the latest model
$499.0 on AmazonThe biggest upgrade over the previous generations is the ability to go flat.
Performance:
- Long battery life covers a larger area
- The vacuum cleans under furniture
- In a flat position, it doesn't lose performance
- Upgraded anti-tangle system resists hair better
- The water tank is located at the bottom, which makes maneuvering easier
With HyperStretch, you can clean under furniture without losing suction.
The cleaner connects to the app.
Self-cleaning cycle washes and dries the whole vacuum
Repositioned water tanks make cleaning more effortless.
Master series
Key features:
- Longer battery
- Stronger suction
- Green headlights
- StreakFree Scrapper
- Shorter when flat
- ChromaGlow display with touch screen
Compared to the S6 Master, this one has a bigger battery, more power, and some extras.
Performance
- Covers a bigger area
- Picks up even the smallest debris
- Reaches all edges
- Removes streaks with the new scrapper
- Puts more pressure on the floor and has a better performance rate
- With the headlights, it is easier to see the dust.
Suits for bigger homes & cleans under furniture with no suction loss.
The scrapper drops when moving backward to remove streaks
Appearance and other things
- A nice ChromaGlow Light Display
- Easy-to-see thumb screen
- Ultra slim body
A nice look makes the cleaner suitable for any modern house.
Cleans itself with hot water & dries with hot air (2 modes)
Which one to buy?
To me, the Floor ONE S7 Master is a clear winner here. Compared to the Stretch Ultra, this one lacks app connectivity, yet has more features to ease cleaning. If you are willing to spend more, get the Master series.
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