FRECIOUS (フレシャス), a natural mineral water server brand delivering water sourced from the slopes of Mt. Fuji, has released the "FRECIOUS dewo ii" (フレシャス・デュオツー) as of March 25, 2026.
The new model succeeds the dewo series, which has remained a popular choice since its debut in 2014. Rather than loading the product with extra features, FRECIOUS dewo ii focuses on targeted upgrades — including room-temperature water dispensing, a reheat function, and UV-LED sterilization — while keeping the easy-to-use, interior-friendly design that the original dewo was known for.
About FRECIOUS
FRECIOUS offers natural mineral water sourced from approximately 1,000 meters above sea level on Mt. Fuji, delivered directly to homes in easy-to-replace lightweight packs and bottles. Customers can choose from three types of natural water, including "FRECIOUS Fuji," a vanadium-containing natural mineral water. The water servers are designed to fit naturally into home interiors while staying accessible to all users.
FRECIOUS dewo ii Features
An Evolved Classic
With over 10 years of history since its 2014 launch, the dewo series has now been updated. The dewo ii adds convenient functions such as room-temperature water and UV-LED sterilization, and refreshes the color palette and branding for a modern look.
PFAS-Free Natural Water
FRECIOUS natural water has been verified by third-party testing to contain PFOS and PFOA below the detectable limit (under 0.1ng/L), offering reassurance about PFAS (per- and polyfluoroalkyl substances) — compounds that have been linked to serious health concerns when accumulated over time.

Two New Colors: "Kinari" and "Sumikuro"
The "Kinari" colorway is a warm off-white tone that pairs well with walls and wood-grain furniture, adding a soft, welcoming quality to any room. "Sumikuro" is a subtle charcoal-toned black evoking diluted ink or natural stone, bringing quiet sophistication and a sense of calm to the space.

Six Temperature Settings
Alongside standard cold and hot water, the dewo ii now offers room-temperature water and high-temperature water (approximately 90°C, handy for instant noodles). It also includes an ECO-warm setting at 70–75°C for baby formula preparation, and an ECO-cold setting for those who prefer their water less chilled — six options in total, covering a wide range of daily uses.
UV-LED Automatic Cleaning
An internal UV-LED periodically irradiates the interior of the server to maintain cleanliness. This reduces the need for manual upkeep and ensures the unit is always ready to use.

Product Details
Available from March 25, 2026 (Wednesday) via the FRECIOUS official website.
- Sales channel: FRECIOUS Official Website (https://www.frecious.jp/)
- Rental plan: ¥550/month (tax included)
- Plans and pricing may vary by sales channel.
- Natural water costs are charged separately.
Specifications:
| Item | Details |
|---|---|
| Cold water (standard mode) | 5–10°C |
| Cold water (ECO mode) | 10–15°C |
| Warm water (standard mode) | 80–85°C |
| Warm water (ECO mode) | 70–75°C |
| High-temperature water | Approx. 90°C |
| Room-temperature water | Varies by ambient temperature |
| Colors | Kinari, Sumikuro |
| Dimensions | W: 290mm / D: 363mm / H: 1,125mm (with lid open: 1,375mm) |
| Weight | 18.2 kg |
| Tank capacity | Cold: 1.5L / Hot: 1.5L |
| Power consumption | Cold: 80W / Hot: 350W |

Other FRECIOUS Models
FRECIOUS Slat — High-Functionality Model
The Slat stores the water bottle in its lower section to reduce the effort involved in bottle replacement, while keeping a clean and streamlined appearance. It offers five temperature options — cold, hot, room-temperature, high-temperature water (ideal for instant noodles), and 70°C warm water for baby formula.
FRECIOUS dewo mini — Compact Countertop Model
A compact countertop model that fits on kitchen counters and uses a lightweight 4.7L water pack, making replacement straightforward even for solo households, women, or seniors.
FRECIOUS Slat+cafe — With Built-In Coffee Maker
A 2-in-1 model combining a water server with a built-in UCC "DRIP POD®" coffee system, letting users enjoy a proper drip-brewed coffee one cup at a time — all while saving counter space.