Ultra Clean. Deep Across Every Tooth.
Advanced cleaning technology works across more directions and surfaces for a deeper, more thorough clean with less effort.
-
Two Motions, One More Complete Clean
Sonic vibrations and oscillating sweeps work together to clean across tooth surfaces from more than one direction. -
More Cleaning in Every Pass
Up to 66,000 movements per minute keep the bristles working at high frequency, helping lift plaque and surface stains with less effort from you. -
80 Seconds, More Complete Care
More time for water flossing helps you clean between teeth and along the gumline for a more complete everyday routine.
Specifications
- MultiClean Technology: 66,000 sonic vibrations + 20° oscillation
- Water Pressure: 124.3 PSI with 0.55mm precision stream
- Cleaning Modes: Deep Clean (3 min) | Quick Floss (80 sec)
- Intensity Levels: Low | Medium | High
- Battery Life: 30+ days (3,000 mAh lithium-ion)
- Charging: Magnetic dock, 8-hour full charge
- Weight: 225g ultralight design
- Dimensions: 269.7 × 48.8 × 36.4 mm
- Voltage: Universal 110-220V
- Waterproof: IPX8 rating, fully submersible
- Testing: 130+ reliability tests passed
- Materials: BPA-free, copper-free construction
- Warranty: 12-month standard
- 2 brush heads (Ultra Soft + Ultra Clean)
- Premium travel case
- Magnetic charger
- Reservoir cleaning brush
Your Questions Answered
Yes. One full tank provides up to 80 seconds of water flossing, designed for a full-mouth routine. If you prefer to floss longer, simply refill and continue.
If you have sensitive teeth or gums, dental work, or recent treatment, check with your dentist or orthodontist before use.
For a gentler brushing feel, an Ultra Soft brush head is included as an alternative.
NEOS II Ultra comes with Ultra Soft and Ultra Clean in the box and is also compatible with Crystal Clean and Classic Clean, sold separately.
Compare the available options on our Replacement Brush Heads page to find the right fit for your routine.
After use, empty and rinse the reservoir, then leave it open to air-dry.
For deeper cleaning, remove the bottom cover and use the included reservoir cleaning brush to clean inside the tank.
Yes. Eligible one-time purchases can be paid for with HSA/FSA funds through Flex.
Select Flex | Pay with HSA/FSA at checkout. If your order includes a subscription, purchase the subscription separately using a standard payment method, as subscription products are not eligible for HSA/FSA payment.
Flex can provide an itemized receipt and, if required, a Letter of Medical Necessity. Eligibility varies by plan, so confirm with your plan administrator.
Yes. NEOS II Ultra can generally be packed in carry-on baggage. Empty the reservoir before travel and follow applicable TSA and airline requirements for batteries and liquids.
Replace your brush head about every 3 months, or sooner if the bristles are visibly worn.
A subscription is optional and includes 10% savings on replacement brush heads.









