

🕶️ Own the moment with classic green military style that never quits.
The Seiko Men's SNK805 5 Automatic Watch is a compact 37mm timepiece featuring a forest green dial and matching nylon strap. Powered by a 21-jewel Japanese automatic movement, it offers reliable, battery-free operation with day/date display. Its stainless steel case and Hardlex crystal provide durability, while water resistance up to 30 meters ensures resilience against everyday splashes. Perfectly sized for modern wrists, this watch blends vintage military aesthetics with practical features for the discerning millennial professional.










| ASIN | B000LTAY1U |
| ASIN | B000LTAY1U |
| Additional Features | Calendar, Luminous Hands, Water Resistant |
| Age Range Description | Adult |
| Band Color | Green |
| Band Length | 7 Inches |
| Band Material Type | cloth |
| Band Width | 18 Millimeters |
| Bands | 1 |
| Batteries | 1 CR2 batteries required. |
| Best Sellers Rank | #2,247,995 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #8,737 in Men's Wrist Watches #19,895 in Men's Shops |
| Brand Name | SEIKO |
| Case Diameter | 32.6 Millimeters |
| Case Material Type | Stainless Steel |
| Case Thickness | 7.28 Millimeters |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | hardlex |
| Customer Reviews | 4.3 4.3 out of 5 stars (7,277) |
| Date First Available | April 4, 2008 |
| Department | mens |
| Dial Color | Green |
| Display | Analog |
| Embellishment Feature | Crystal |
| Face Style | Crosshair |
| Global Trade Identification Number | 04954628029584 |
| Included Components | Green nylon strap, Hardlex crystal, Japan automatic movement (Caliber 7S26B, 21 jewels), stainless steel case |
| Is Discontinued By Manufacturer | No |
| Item Weight | 60 Grams |
| Item model number | SNK805 |
| Manufacturer | Seiko Watch Corporation |
| Manufacturer | Seiko Watch Corporation |
| Manufacturer Part Number | SNK805 |
| Model Name | SNK805 |
| Model Number | SNK805 |
| Power Source | Battery Powered |
| Product Dimensions | 3.31 x 3.78 x 3.31 inches; 2.12 ounces |
| Series Number | 805 |
| Shape | Round |
| Sport Type | Swimming |
| Strap Type | Nylon |
| Style Name | casual |
| Theme | Army |
| UPC | 029665158697 |
| Warranty Type | Manufacturer |
| Watch Movement Type | Automatic |
| Water Resistance Depth | 99 Feet |
| Water Resistance Level | Water Resistant |
C**Y
Excellent, versatile, classic watch. Affordable price.
This is a great watch. So much has been said in other reviews that I won't add to the noise but one area that hasn't been thoroughly discussed I feel I may have something to add to is the color of this specific model (SNK807). As an artist color is paramount and something I'm sensitive to. So having only the pictures online to go on was something of a leap of faith for me, the luxury of holding something in our hands before we buy it is foregone when purchasing over the Internet. The user posted pics all seemed to vary from one another, either being super saturated green or nearly black. So I've posted my own pics which are very color accurate. The first pic is in broad daylight, which is as green as this watch gets. The other two are under normal room lights (daylight fluorescents). My point is, this is a dark olive drab with almost no green at all, which is exactly what I had hoped for. Another aspect of this watch I really like is its versatility. You can strap on a fancy leather strap and its a classy dress watch, or throw a NATO style strap on and head into the wilderness for years at a time and not worry about anything, especially batteries (this is a fully mechanical automatic watch). It may not be obvious, but this is also related to color. The neon green strap this watch is shipped with is bright and has the effect of making the watch face appear more green. Google "simultaneous contrast" for more, or believe me when I say your choice of strap color has a huge influence on what color the watch appears to the eye. I bought a very nice $30 "OD phalanx" strap from Crown and Buckle and am very pleased, plus the khaki NATO strap, both of which are pictured above. My sample ran less than 30 seconds fast for the entire first week I owned it, and has been plus or minus two seconds a day since then. From what I've read of other automatics, this is outstanding especially for the price, and I couldn't be happier with this watch. I have no idea what the negative reviews are talking about, unless they bought from someone other than Amazon and received Feikos. Another thing I'd like to clarify is the Lumibrite. It's brightness and longevity are directly proportional to how much light YOU expose it to before it's in darkness. Ten to twenty minutes in direct sunlight and it will glow like its radioactive for hours. Only room lights and it's a subtle glow for a couple of hours. I didn't really want this feature, but now that I have it I love it. Really, the pattern it has when all the lights are out is really classy. It's like an old Rolex design. Very nice, Seiko. Thanks for a great watch. Will buy again, even if it's just to get the other colors!
M**K
Great Watch Bought 2015
I bought this watch in 2015 for $60 here on Amazon. Now it’s $245??? While I LOVE this watch, that’s overpriced. That out of the way, after more than a decade I can say this watch holds up great. Sometimes, I don’t wear it for more than a month, but as soon as I pick it up, it starts ticking, and I can set date and time. After 24 hours, it typically runs a minute fast. So each morning I correct the time setting. I don’t mind that at all; it makes the watch feel alive compared to, for example, a solar quartz I have that never needs adjustment. I never liked the green strap that came with it, and I replaced it with a khaki leather NATO strap. The khaki leather with the green dial is a nice combination in my view. See pic attached. As to size: at 37mm it’s the perfect size for NORMAL wrists (mine’s 7.25”). Yes, you read that right. Trust me, a 42mm watch is way too large for 99% of guys. This oversized watch nonsense started in the 1980s. Ties got large too in that horrible fashion decade, but have scaled back by now. Why watches have not is a mystery to me (can we blame Stallone & Schwarzenegger?) Look at the proportions to your wrist! Are you trying to compensate for something? Are you blind? Okay, rant over. Anyway, great watch other than the 2026 price.
D**E
This is a GOOD watch. No resets at all. "Edit 4"
A few years ago I had this watch stolen from me by someone who apparently liked it as much as I did. I tried not to think about it because I'd bought some higher end automatics, but I really missed it so I finally broke down and bought it again. In its price range there is no better choice in automatic wristwatches. My first one was a perfect watch, and its replacement so far has been every bit as good as the one I got nine years ago. Supposedly Seiko is slowly phasing these out on favor of its replacement, which has hand winding, and hacking, but also a 300% higher price tag. So if you are undecided, let me say again, buy one now. Do not wait, in the future a used one might be your only option. ***EDIT*** Over a year and still going strong. Not my prettiest watch, but my most reliable and practical one without a doubt! One of these days I want a cream colored one as well. ***Edit*** A month in and still the best mechanical watch I have ever had ***Edit*** So far I'm liking it very much. "Well made, keeping good time. Nicely styled tribute to the old army issue watches of WWII. Whats nice about it is it is very unisex, its small enough to be worn on a woman of medium build, yet looks quite presentable on a man. ***Edit*** Just did a test run for reserve power. Took it off, laid it down flat on its back on a table and it ran for 47 hours! 47 hours and 14 minutes to be exact. So yes, I can change to another watch and it takes approx two days to run to a stop. That's assuming its been worn for a day before it. It gains about a minute a week. For a mechanical watch that is very good. If you don't expect time creep at ALL, do not buy an automatic watch. You will only be happy with quartz. ***Edit*** The only thing I don't like about it is I was told the lume was very bright and lasted a long time. The Lume is pretty weak actually. As to warranty, notice that when the seller is directly from Amazon it has a three year warranty. But when its sold by a third party seller and just fulfilled by Amazon it makes no such claim. (And contains no warranty card) So by all means buy it, but make sure its sold AND fulfilled by Amazon. The sellers seem to rotate over a period of days, sometimes third party, sometimes not. I've noticed, third party grey market watches and Feikos are a real problem. Some of the negative reviews are pretty obviously based on fake watches. Yes, fake Seiko 5s are a real thing and a serious problem. (Google Feiko) If your watch was fulfilled by Amazon and not sold by them as well, it probably didn't have a box, and certainly had no warranty card. IF it had no warranty card do NOT accept it and get a refund. Get one directly from Amazon only and not one of their shifty "fulfillment partners" I've seen reviews on here that are clearly Feikos. Whatever you do, be sure you get yours directly FROM Amazon, and NOT from a company using Amazon for fulfillment. Going to test it tomorrow and see how long it really runs without being worn. The watch I have is very solid, and so far has been excellent. The only thing that CAN explain some of the negative reviews is Feikos creeping into the supply chain.
A**R
decent but overpriced
These watches were a good value starter automatic for someone with smaller wrists in the past. They hold up well and the bands are durable but not the most comfortable. The power reserve on them is not great. In recent years the prices have spiked and there are better choices available.
D**E
I was fed up with changing batteries in watches and considered simply buying a cheap watch whenever the battery died. Trouble is, cheap watches look cheap so i decided to try a decent automatic watch and found this for a good price. For the first week I was rather disappointed because it kept stopping in the middle of the night. To cut a long story short, you cannot wind this watch manually, all you need do is put it on your wrist and rotate your wrist about 100 times. Since I did that the watch has never stopped. I am very pleased with the watch. It looks good on my narrow wrist, keeps good time and best of all I will never get ripped off by jewellery stores charging too much to replace a battery. As others have said, the only improvement would be to provide instructions that relate specifically to this model. Update: 2 years on and I still like the watch. As others have noted, it does run a little fast. For me it is not a big problem so I do not bother to measure at what rate it gains, I just set it back a few minutes as needed. The case is tough, no scratches and I wear it all the time. The woven band still looks Ok even though the leather strip around the holes has worn a little. Update: the watch is now 7 years old. I have never replaced a battery, which is great. However it now loses about 4 or 5 minutes a day even when fully wound. This may not seem like much but if I forget to adjust it for a few days it can then be 15 mins slow which means that I can not rely on the watch. Update: the watch is now 9 years old. The strap is a bit tatty but otherwise it still looks good. Strangely it is keeping better time than it did 2 years ago. If I make the effort to wind it every 5 days or so (simply by rotating my wrist for a minute or so) it keeps decent time.
J**S
Bought on sale for ~30% off. For that price it can't be beat. It's small, light, clearly tells the time, day and date, without a battery. It's cheap enough that I don't mind wearing it everywhere, and risking scratches. It looks good (the dial is darker green than the pictures make out). The reviews regarding other languages in the day dial are correct - it does have other words in there, but I think it's an international market situation. Once you setup the watch correctly, which takes only a minute or two, the days tick over as you'd expect and maintain the language you choose (you can see how it works when you set it up). The watch is light, which some people have construed as 'cheap' but the watch is cheap. I'm wearing this watch everywhere so I prefer it to be light, smaller, and flatter than my other more expensive automatic watches. If you want a premium, heavy, all singing watch, spend 4x the cost of this and then realize you should've spent more. This watch is an everyday work horse. No frills time, date, and day. Simplicity. If you want a no nonsense watch that just works, this is it. Some reviewers have mentioned quality issues on their examples - mine was not one of them. Remember, if you got a watch that wasn't working, you'd leave a review. If it was what you'd expect, you'd almost never come back to review. So there's a review bias here. I'm here because it came up in my boxing day sales, and I thought I'd give a review of ownership since black Friday.
A**R
Everything is perfect . I want to buy it again .
S**A
Ha superado mis expectativas. Este Seiko automático tiene una caja de 37 milímetros, lo justo para mi gusto y mi muñeca. Es discreto y elegante. También muy cómodo gracias a la correa de nylon y a su contenido tamaño. Para rematar, se adapta a la perfección, ideal para utilizar a diario. La estética es brutal. Las fotografías que dejo en esta opinión no hacen justicia, ¡tienes que ponértelo en la muñeca para apreciarlo de verdad! Sólo un punto negativo. La correa trae un refuerzo frontal de piel, debería ser suficiente para evitar la rotura de los ojales pero como ves en las fotografías, en la parte trasera hay bastante desgaste después de un mes de uso (y de mucho poner y quitar). No debería ser un problema, a parte de eso la correa parece fiable, por eso mantengo las cinco estrellas. Compra maestra. Relojazo automático con mucha presencia y un precio inmejorable.
J**R
I use it daily as I love it. Sometimes it runs a bit fast, but at least I'm never late. :) I wear it when I swim with no issues (so far). The wristband has been replaced with a NATO strap though as the faux leather started to wither away.
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