Seiko
Prospex
SNJ031
On this page you can read about Seiko model Prospex SNJ031. All the technical specifications like case material, case diameter and calibre attributes like movement type, power reserve etc. are listed here in an easy to understand tabular format. There are also images of Prospex SNJ031. At the bottom of the page you can find similar watches from Seiko.
Important facts
The Seiko Prospex SNJ031 is applied with a hardlex crystal, Seiko's proprietary glass technology. It is more scratch resistant than plexiglass and less expensive than sapphire, therefore a good choice for mid range wristwatches.
This watch has a screw-down crown which ensures a much better water resistance by providing a tighter seal between the crown and the case. This keeps moisture or dust from entering the watch case, which could otherwise cause damage to the movement. This also helps to prevent accidental adjustment of the time or date. The screw-down feature makes it more difficult for the crown to be accidentally turned, reducing the risk of incorrect timekeeping. Also, it is a reassuring feel to tighten the crown by screwing it down.
The case of this timepiece is made out of stainless steel which is a strong and durable material, therefore being resistant to scratches, dents, and general wear and tear. Steel is also highly resistant to corrosion and rust, but is also a hypoallergenic material, which means that it is less likely to cause skin irritation or allergic reactions. Let's not forget the versatility of steel, which makes this watch pair well with several different attires.
The Prospex reference SNJ031 is a dive watch, meaning it was designed and built specifically for underwater use. All dive watches need to have water resistance of at least 20 bar / 200 meters, legibility in low-light conditions, a timing feature (e.g.: rotating bezel), running indicator and corrosion resistance.
Technical specifications
| brand | prospex |
| case back locking | screw down |
| case coating | super hard |
| case diameter | 47.8 |
| case material | plastic |
| case material | stainless steel |
| case thickness | 14.4 |
| dive watch | |
| front crystal material | hardlex |
| gender | male |
| line name | street series |
| lug to lug | 50.5 |
| lume | on bezel |
| lume | on markers |
| lume | on hands |
| manufacturer lume name | lumi brite |
| rotatable bezel | unidirectional |
| screw down crown | |
| strap material | silicone |
| water resistance meter | 200 |
| weight | 114.0 |
Calibre specifications
| calibre no | h851 |
| calibre precision month plus minus | 15 |
| calibre type | solar |
| perpetual calendar |
