# Tissot PRX vs Citizen Tsuyosa

Source: https://lumeandbezel.com/blog/tissot-prx-vs-citizen-tsuyosa
Published: 2026-10-09
Publisher: Lume & Bezel

**Short answer:** Both are integrated bracelet automatics with 40mm and smaller options. The Tissot PRX costs roughly twice as much in its listings and adds 100m water resistance, an interchangeable bracelet and a Swiss automatic movement, with the Powermatic 80 confirmed in the 35mm listing. The Citizen Tsuyosa costs less, lists sapphire, a 42-hour reserve and a 5-year limited warranty, but only 50m. Buy the Tsuyosa for value; buy the PRX for water resistance and the longer reserve.

The Tissot PRX made integrated bracelet watches affordable, and the Citizen Tsuyosa arrived as a cheaper Japanese alternative with a bright range of dial colors. This page is for buyers choosing between the two. It compares the 40mm and smaller versions of each using Amazon listing facts: case size, thickness where stated, movement, power reserve, water resistance, crystal and bracelet. Where a listing leaves something out, the table says it is not confirmed. It ends with a straight answer on who should buy which.

## Two takes on the integrated bracelet watch

An integrated bracelet watch has a bracelet that flows directly out of the case, with no visible gap at the lugs. The style comes from 1970s luxury sports watches, and it reads as both sporty and dressy. The PRX and Tsuyosa both follow that formula with a round case, flat links and a clean dial with a date.

The fit is different from a standard watch on a strap. Because the first links are attached rigidly to the case, the effective lug to lug is longer than the case alone, and smaller wrists can feel it. That is the main reason both brands also sell smaller versions, a 35mm PRX and a 37mm Tsuyosa.

## 40mm vs 40mm: spec comparison

Listing facts only. The Tsuyosa listing does not give case thickness, so it is marked as not confirmed.

|  | Tissot PRX 40mm automatic | Citizen Tsuyosa NJ0150-56E |
| --- | --- | --- |
| Case size | 40mm | 40mm |
| Thickness | 10.93mm | Not confirmed in listing |
| Movement | Swiss automatic | Automatic |
| Power reserve | Not stated in listing | 42 hours |
| Crystal | Not stated in listing | Anti-reflective sapphire |
| Water resistance | 10 bar (100m) | 50m |
| Bracelet | Interchangeable, butterfly clasp with push buttons | Integrated stainless steel |
| Date | Yes | Yes, at 3 o'clock |
| Warranty | Not stated in listing | 5-year limited |
| Listed price | $850.00 | $346.50 |

Listing facts only

[See the best Tissot automatic watches](https://lumeandbezel.com/best/best-tissot-automatic-watches)

## Smaller sizes: PRX 35mm vs Tsuyosa 37mm

For wrists under about 6.5 inches, the smaller versions are worth a look. The PRX 35mm listing confirms the Powermatic 80 movement, a 10.93mm case and a quick release bracelet. The Tsuyosa 37mm listing is short: it confirms the 37mm size, the integrated stainless bracelet and Caliber 8210, and nothing else, so water resistance, crystal and reserve for that model are not confirmed here.

|  | Tissot PRX 35mm Powermatic 80 | Citizen Tsuyosa 37mm NJ0200-50L |
| --- | --- | --- |
| Case size | 35mm | 37mm |
| Thickness | 10.93mm | Not confirmed in listing |
| Movement | Swiss Powermatic 80 | Caliber 8210 |
| Water resistance | 10 bar (100m) | Not confirmed in listing |
| Bracelet | Quick release, butterfly clasp | Integrated stainless steel |
| Listed price | $795.00 | $346.50 |

Listing facts only

[See automatic watches for small wrists](https://lumeandbezel.com/best/best-automatic-watches-for-small-wrists)

## Movement, finishing and what the price gap buys

The PRX uses a Swiss automatic movement; Tissot's Powermatic 80, named for its 80-hour reserve, is confirmed in the 35mm listing. That reserve is close to twice the Tsuyosa's listed 42 hours, which matters if you take the watch off for a weekend. See [what is Tissot Powermatic 80](https://lumeandbezel.com/blog/what-is-tissot-powermatic-80).

The Tsuyosa's case, bracelet and sapphire are strong for its price, and its 5-year limited warranty is longer than many brands offer. Finishing details such as brushing and polishing contrast are hard to judge from a listing, so look at close-up photos from the brand if that matters to you. The PRX's 100m rating is double the Tsuyosa's 50m, which is the bigger practical gap for anyone who swims.

## Fit and bracelet sizing

Both bracelets need links removed for most wrists. The PRX listing calls its bracelet interchangeable with a quick release, which makes swapping to a strap easier. Integrated bracelets usually only accept straps made for that case shape, so check before buying a third-party strap. See [how to size a watch bracelet](https://lumeandbezel.com/blog/how-to-size-a-watch-bracelet).

If you are between sizes, measure your wrist and run the numbers in the [wrist fit calculator](https://lumeandbezel.com/tools/wrist-fit-calculator). For the PRX specifically, [Tissot PRX sizes](https://lumeandbezel.com/blog/tissot-prx-sizes) walks through each option.

## Who each watch suits

The Tsuyosa suits a first automatic buyer who wants a dressy sports watch for the office and weekends, likes bright dial colors and does not plan to swim with it. Its listed price leaves room in the budget for a second watch or a [watch winder](https://lumeandbezel.com/best/best-single-watch-winders) later.

The PRX suits someone who wants one integrated bracelet watch to wear every day for years, including in the pool, and values a Swiss movement with a long reserve. If you want more Swiss choices in the same budget, compare the [best Swiss automatic watches under $1,000](https://lumeandbezel.com/best/best-swiss-automatic-watches-under-1000).

## Frequently asked questions

**Is the Citizen Tsuyosa a PRX homage?** It shares the integrated bracelet idea, which predates both watches, but it is Citizen's own design with its own case, dial colors and movement.

**Can you swim with the Tsuyosa?** The 40mm NJ0150-56E listing says 50m. That is generally fine for rain and hand washing, and borderline for regular swimming. The PRX's 100m rating is the safer choice for the pool. See [water resistance ratings explained](https://lumeandbezel.com/blog/water-resistance-ratings-explained).

**Which has the longer power reserve?** The Tsuyosa 40mm lists 42 hours. Tissot rates the Powermatic 80 in the PRX at up to 80 hours.

**Is the PRX worth twice the price?** If you want Swiss make, 100m water resistance and a long reserve, many buyers think so. If you want the look at the lowest cost, the Tsuyosa delivers most of it. Read [is the Tissot PRX worth it](https://lumeandbezel.com/blog/is-the-tissot-prx-worth-it).

## Gear guides for this topic

- https://lumeandbezel.com/best/best-tissot-automatic-watches
- https://lumeandbezel.com/best/best-citizen-automatic-watches
- https://lumeandbezel.com/best/best-automatic-watches-under-500
- https://lumeandbezel.com/best/best-automatic-watches-for-small-wrists