Updated October 14, 2026 · ThriveCue Editorial Team
ERA-FIT vs METZ
ERA-FIT vs METZ: the differences
| Compare |  ERA-FIT |  METZ |
|---|---|---|
| Price from | €219 | €99.90Lower |
| Battery life | 10 to 14 daysHigher | 10 days |
| Warranty | 1 year | 2 yearsHigher |
| Markets | AT, DE, CH | AT, BE, BG, HR, CZ, DK, EE, FI, FR, DE, GR, HU, IS, IE, IT, LV, LT, LU, NL, PL, PT, RO, SK, SI, ES, SE |
| Membership per month | €0 | Not confirmed |
Same on both: Platforms (iOS, Android), Water resistance (m) (100).
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Key differences
- METZ scores higher overall: 9.0 vs 8.9.
- Price from is lower at METZ: €99.90 vs €219.
- Battery life is higher at ERA-FIT: 10 to 14 days vs 10 days.
- Warranty is higher at METZ: 2 years vs 1 year.
- Support channels: only ERA-FIT offers Chat.
- Support channels: only METZ offers Phone, Help centre.
- METZ is available in 23 more countries.
- Products: only METZ offers Smartwatch.
- Health sensors: only ERA-FIT offers Hrv, Gps.
- Markets: only ERA-FIT offers CH.
Our verdict on each
ERA-FIT
ERA-FIT suits anyone who wants a screenless smart ring with no subscription attached, since the Nextring runs at €0 a month and membership is not required. The trade-off is coverage: it ships to AT, DE and CH and carries 1 year of warranty, so buy it for tracking rather than for a broad hardware lineup.
METZ
METZ suits European buyers who want a smart ring and a smartwatch from one young brand, with the METZ entry product at €99.90 and a 2 years warranty behind it. The trade-off is battery: the ring runs 10 days, below the smart ring field median, so value buyers gain more here than endurance buyers.
Score breakdown
| Area | ERA-FIT | METZ |
|---|---|---|
| Cost | 8.9Entry price of €219 with membership listed as not required and a monthly plan price of €0. | 9.2HigherEntry hardware at €99.90 sits under both category medians: €99.90 and €174.52. |
| Offer | 8.9The Nextring tracks heart rate, spo2 and skin temperature, runs 10 to 14 days per charge and carries 1 year warranty. | 9.3HigherA smart ring and smartwatch range, apps on iOS and Android and water resistance to 100 m in a small, focused catalogue. |
| Trust | Not confirmed | 8.0UAB Hiperfarma in LT, founded 2023, with support on email, phone and help centre. |
If neither fits
Runmefit has price from at €47.99, against €219 for ERA-FIT and €99.90 for METZ.
Runmefit reviewWhere these facts come from
ERA-FIT
- era-fit.com: 12 facts, checked September 30, 2026
METZ
- metzcare.com: 12 facts, checked September 30, 2026
How they place
| Ranking | ERA-FIT | METZ |
|---|---|---|
| Smart rings | 11 of 14 | 4 of 14 |
Every fact side by side
| Fact | ERA-FIT | METZ |
|---|---|---|
| Products | Smart ring | Smart ring, SmartwatchCovers more |
| Health sensors | Heart rate, Spo2, Skin temperature, Hrv, Sleep, GpsCovers more | Heart rate, Spo2, Skin temperature, Sleep |
| Legal entity | ERA-FIT GmbH | UAB Hiperfarma |
| Headquarters | Austria | Lithuania |
| Founded | Not confirmed | 2023 |
| Support channels | Email, Chat | Email, Phone, Help centre |
Fitness equipment
| Fact | ERA-FIT | METZ |
|---|---|---|
| Membership required | No | Not confirmed |
| Screen size (in) | 0 | Not confirmed |
| Money-back period | 30 days | Not confirmed |
Where each stands against the rest
| Fact | ERA-FIT | METZ | Median |
|---|---|---|---|
| Price from | €219above the median | €99.90below the median | €199 |
| Membership per month | €0at the median | Not confirmed | €0 |
| Battery life | 10 to 14 daysat the median | 10 daysbelow the median | 14 |
| Water resistance (m) | 100above the median | 100above the median | 50 |
| Warranty | 1 yearat the median | 2 yearsabove the median | 1 year |
Median across 27 listed brands.
Pros and cons
ERA-FIT
Pros
- No membership required, and the monthly plan price is €0, so the €219 ring is the whole outlay.
- Battery life of 10 to 14 days and water resistance to 100 metres suit overnight and pool wear.
- The sensor set covers heart rate, spo2 and skin temperature in one ring.
Cons
- Warranty cover of 1 year is thin for a device you sleep and swim in.
- Support runs on email and chat only, so sizing and setup questions go by email or chat rather than a call.
- A screen of 0 inches means nothing shows on your wrist, so the phone has to be within hand for every reading.
METZ
Pros
- The range covers smart ring and smartwatch, so a ring and a watch come from one seller rather than two.
- The ring's heart rate, spo2 and skin temperature cover heart rate, blood oxygen, skin temperature and sleep, and the apps run on iOS and Android.
- Support runs on email, phone and help centre, so email, phone and a help centre are all available routes.
Cons
- Battery life of 10 days falls short of the smart ring median 14 and of the smartwatch median 11.5.
- The catalogue stops at smart ring and smartwatch, while Amazfit lists smartwatch, fitness tracker and smart ring, so a chest strap and a smart scale sit outside the METZ range.
- Shipping reaches AT, BE and BG, and that list does not extend past those markets.
Who each suits
ERA-FIT
Who it suits
- Buyers who want recovery and sleep data without a monthly fee, since membership is listed as not required and the plan price is €0.
- People who would rather not wear a display, given a screen of 0 inches and readings held in the app.
- Customers in Austria, DE and CH who wear the ring in water to 100 metres.
Who should look elsewhere
- Anyone who wants a watch, fitness tracker, chest strap or smart scale from the same maker, since smartwatch, fitness tracker and smart ring covers those types.
- Buyers settled on Oura and ready to pay more, since that ring starts at €265.30 against ERA-FIT at €219.
- Shoppers who want a smartwatch and a ring from one brand, since smartwatch and smart ring lists both.
METZ
Who it suits
- Value buyers inside METZ's shipping markets, who get a ring and a watch starting at €99.90 with a 2 years warranty behind them.
- People who want phone and help centre support rather than email alone, since support runs on email, phone and help centre.
- Swimmers and showerers, since the ring is water resistant to 100 m and reads heart rate, blood oxygen, skin temperature and sleep.
Who should look elsewhere
- Readers who want fitness trackers as well as watches, since Runmefit lists smartwatch and fitness tracker and the METZ range is smart ring and smartwatch.
- Shoppers who want a chest strap or a smart scale, since Amazfit lists smartwatch, fitness tracker and smart ring and those types are not in the METZ range.
- Watch-only buyers, since Oukitel's smartwatch is a watch line and METZ splits smart ring and smartwatch between a ring and a watch.
Country by country
| Country | ERA-FIT | METZ |
|---|---|---|
| Belgium | No | Yes |
| Bulgaria | No | Yes |
| Croatia | No | Yes |
| Czechia | No | Yes |
| Denmark | No | Yes |
| Estonia | No | Yes |
| Finland | No | Yes |
| France | No | Yes |
8 of 27 countries where either is available.
Questions about each
ERA-FIT
How much does the ERA-FIT ring cost, and is there a monthly fee?+
The Nextring is listed from €219, paid once for the hardware. Membership is listed as not required and the monthly plan price is €0, so the checkout figure stays the recurring figure unless other hardware is added later.
Do I need a membership to use the ring?+
Membership is listed as not required and the monthly plan price is €0. The readings come through the phone apps on iOS and Android, and the ring carries heart rate, spo2 and skin temperature for tracking. Any paid tier would sit outside the ring, so the ring itself adds no renewal charge.
METZ
What does METZ cost to get started?+
The METZ entry product is €99.90, a hardware price set against the smartwatches and fitness trackers median of €99.90 and the smart rings median of €174.52. Buyers working to a budget get entry level gear here for less than the typical price in either category.
How long does the METZ ring last on a charge?+
The listed ring runs 10 days, under the smart ring median of 14 and under the smartwatch median of 11.5. METZ ranks 13 of 23 brands on battery days, so plan on regular charging rather than a set and forget device.