Citizen BM7390 Eco-Drive Watch
Citizen BM7390 Eco-Drive Watch
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Product Description
Citizen’s line of light-powered Eco-Drive watches offers the accuracy of quartz movements with the hassle-free nature of automatic watches that never need a battery replacement. This model pairs the innovative Eco-Drive movement with a look and build to handle the Great Outdoors Read More

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kingping
106
Nov 8, 2019
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I'd happily pay an additional $20-40 for a sapphire crystal. Always!
Nov 8, 2019
RayF
17145
Feb 15, 2020
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We’ll get right on that!
Feb 15, 2020
bambam67
277
Nov 8, 2019
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picked one up a few weeks ago for 70 bucks brand new off of ebay JS>
Nov 8, 2019
tnghiem
16
Nov 7, 2019
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I don't understand the point of having compass markings on the watch. Are they just for looks?
Nov 7, 2019
Kizer
78
Nov 11, 2019
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you're half way there. The problem is you have to find north first (or South if you're in the Northern hemisphere). You can do this with your watch if it is set to the correct time, and not to daylight savings time. You also need to be able to see the sun, so no good at night time or on overcast days. The fixed bezel on this watch will only confuse things, unless it's 12 midday and you're in the southern hemisphere. For anyone in the Northern hemisphere, it will never be right, unless you get the midnight sun. The compass markings on this watch are only for fashion, or more likely, to give the illusion that the wearer is an outdoors adventurer. A rotating bezel will help with better accuracy - esp between the cardinal points (NEWS). Watching a video will help - I'm only pointing out a couple of issues. Actually even a diving watch with a rotating bezel is the next best compared to a rotating bezel with compass markings - they're very handy because you can count the clicks between the hour hand and the 12, then halve those clicks to get South. This is what I do if my partner is navving; I can keep a loose eye on things and it keeps me familiar, albeit using North instead of South. Although after a while I get lazy because I generally know the directions in relation to the sun and the time of day and season (through winter the sun goes NE to NW for us in the Southern hemisphere). If you watch a video or two, you'll understand what I mean. One more important detail with using a watch as a compass; for me in the Southern hemisphere, I'd find North using the sun (and I'd point the 12 at the sun then bisect between the 12 and the hour hand). For anyone in the Northern hemisphere you'd find South using the sun (point the hour hand at the sun, then bisect between the hour hand and the 12). Once you have South, then you know North is behind you. I subconsciously know where cardinal points are in relation to each other - if you don't, a mnemonic is useful. Never Eat Slimy Worms. This mnemonic gives you the the location of the cardinal points from any one known cardinal point - it works clockwise the same way that it is said. For example, if you're facing North (Never), 90 degrees to your right is East (Eat). Or, if you're facing South (Slimy), 90 degrees to your right is West (Worms). Another advantage of a compass is not having to remember that. As wiley-quixote has already said you're really better off with a compass :) . A transparent (silva) compass is more accurate taking a bearing from a map, or a bearing from from a landmark, then lining it up on the map, and map work in general. Even orienting a map is a very useful thing. If you're atop a mountain you can orient the map then know where everything is from your view point, for example. I've also oriented maps in foreign cities where I'm not familiar with landmarks, usually when I need to know whether to turn left or right on a road intersection (road has the same name left and right). With a silva type compass you can easily allow for the difference between magnetic north and true north. A diving watch with rotating bezel has the more useful 60 minute timer that can also pull duty for compass points (N at 60, E at 15, S at 30, W at 45). Using a watch is pretty accurate - I have no trouble with it so long as I can see the sun. Generally what happens (for me in the southern hemisphere) is I find North. Then I face the direction I want to travel in, according to my North. I take note of where the sun hits me while I'm facing the right direction, for example, at right angle to the left or just a bit behind my left shoulder. Then I go. If the sun starts getting behind me, or shifts around in front of me, I know I'm veering off (or the track is changing direction). As the sun moves you have to keep re calibrating this - say every 30 mins. This is what I do with compass or watch. It's usually to keep track of where I am on a track. I look at the track on the map and see there's a big direction change at a certain point. It's just another way of keeping track, along with time (I average 10 min per km on rough track - so after 30mins I should be about 3km further along on the map) and other features shown on a map (creek crossings, re entrants, track going up or down, slope climbing on my left side or dropping off on my right etc, dense bush, swamp - all those things you get off a map). Where you lose some accuracy, is relating a bearing to the map, or taking a bearing from the map. It does help to take the watch off your wrist for map use, and to hold it at arms length for more accuracy.
(Edited)
Nov 11, 2019
Kizer
78
Nov 11, 2019
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And RayF; with your explanation you will be up to roughly 90 degrees out. Pointing the hour hand at the sun only "establishes" where the sun is, lol. It is good that you know how to find the sun though. South (if you're in the Northern hemisphere) is between the hour hand pointing at the sun and the 12. So, if it's 1800, then South would be at the 3. If it's 0600, then South would be at the 9. If you don't understand why it's a different reading at 0600 compared to 1800 (hour hand is at the 6 for both times), it's because the sun has changed position throughout the day. Before noon you go clockwise from the hour to the 12 to find the mid way point. After noon you go anti clockwise from the hour to the 12 to find the mid way point. It's really something you need to practice to understand why this works; you might also begin to understand what you're trying to talk about :) For example, for your benefit (I assume you live in the northern hemisphere) I'm explaining this in reverse to what I know here, in the southern hemisphere. Although I did have to use my watch as reference - it's like doing stuff left handed. It was an interesting exercise though :)
(Edited)
Nov 11, 2019
Over-Consumer
117
Nov 7, 2019
Locked
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I wouldn’t say I NEED this, but for the price ima pick one up
Nov 7, 2019
NightBird
16
Feb 15, 2020
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It implies nothing outside of people pressing a button. Well, and that you live in the comments. Have a good day!
Feb 15, 2020
Cartmen
127
Feb 15, 2020
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Iguana
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Feb 15, 2020
Over-Consumer
117
Nov 7, 2019
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Uh oh, a useful and decent looking quartz watch that’s inexpensive.......hurry up, let’s all shit all over it. Seriously though, where’s all the trolls at on this one?
Nov 7, 2019
Dmanjapan
90
Nov 8, 2019
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If I hadn't just bought the Shield. My life is a bitter trail of lost opportunity.
Nov 8, 2019
jakenewman
64
Nov 7, 2019
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This one checks a lot of boxes...especially the good boxes.
Nov 7, 2019
RayF
17145
Nov 7, 2019
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I would just like to point out that it's entirely possible to wear a Diver in the Field, but you generally can't wear a Field watch while Diving (or swimming, showering or just getting thrown in the pool by your drunken friends at a Labor Day party which, as we all know, can occasionally happen--depending on the sort of crowd you gravitate towards). All that aside, this seems like a perfectly good Field watch.
(Edited)
Nov 7, 2019
RayF
17145
Nov 7, 2019
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So let me get this straight--you're saying Gene Kelly is useful only if you use him? That seems rather...improper some how!
(Edited)
Nov 7, 2019
ctw2450
4
Nov 8, 2019
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HA, my brainfart! hope you got the idea
Nov 8, 2019