Product Details

• Amazon Sales Rank: #1852 in Watches
• Brand: Citizen
• Model: BM6400-00E
• Dimensions: .15 pounds
• Band material: canvas
• Bezel material: stainless-steel
• Case material: stainless-steel
• Clasp type: Buckle
• Dial color: black
• Dial window material: Mineral
• Movement type: Japanese-Quartz
• Water-resistant to 660 feet

Features

• Ecologically friendly, light powered Eco-Drive Japanese-quartz movement; Charges in natural sunlight or indoor light
• Black durable nylon strap
• Date calendar feature
• Luminous hands and hour/minute markers; Compact brushed stainless steel case
• Water-resistant to 660 feet (200 M)

Amazon.com Product Description
Explore new, exciting depths with this men's Eco-Drive 200 Meter dive timepiece. Equipped with large stainless case, black canvas strap, and boldly luminous hands and oversized numbers, you'll be able to easily read the time whether you're diving deep into the sea or relaxing next to the pool. Additional features include a three-hand function, date indicator window, non-reflective crystal, screw-back case and screw-down crown.

The Citizen Watch Brand

The company was established in 1924. The founding fathers selected the name Citizen so it would be "Close to the Hearts of People Everywhere" and soon after adopted the company’s formal name, Citizen Watch Company.

During the last seventy-five years Citizen has expanded its business throughout the world and has achieved recognition as the global brand. The past twenty-five year period has coincided with the company’s dramatic rise to its current position as the world’s largest watchmaker, a distinction Citizen has held every year since 1986.

Beyond sheer size, Citizen is also recognized as a worldwide leader in advanced technology. From the world’s slimmest LCD watch to the first voice recognition watch and the world’s first professional dive watch with an electronic depth sensor, Citizen’s record of "world’s firsts" is unmatched.

More recently, Citizen has staked out a new position as the leader in Ecologically Friendly timekeeping with its Eco-Drives watches that are light powered. With models ranging from dress models to sports models to professional dive watches, Citizen Eco-Drive runs continuously in any kind of natural or artificial light for a lifetime of use. Fueled by light, it never needs a battery.

Eco-Drive Frequently Asked Questions (See the full Citizen Eco-Drive FAQ here)

How can you tell if the Eco-Drive watch is getting enough light?
In normal use, the watch displays the time and the sweep-second hand moves in one second intervals. A very important feature of Eco-Drive is the Low Charge Warning Mode which as a result of low battery voltage, causes the second hand to jump two seconds at a time (while still keeping correct time).

How long will an Eco-Drive watch run after it is fully charged?
If your watch is put away where no light is available to it while in a fully charged state, depending on the model, it will run for from 45 days to 5 years.

How can the Eco-Drive watch be recharged?
Besides sunlight, it can be safely charged by exposing it to a fluorescent desk lamp, with the dial (face) up and within about 8 inches or an incandescent lamp (regular light bulb) no closer than 20 inches. Never use a halogen lamp since the heat generated by it can cause damage to your watch. The most efficient and the quickest is in direct bright sunlight (not windowsill) and never on the dashboard of a car.

Customer Reviews

DURABLE, EASY READING, SIMPLE, STRONG....GREAT!
I am slowly converting my watch collection from a mix of self-winding automatic and a few quartz to all Citizen Eco-Drives. This is the latest addition and I am delighted with it. The watch is a "beater"...it will be perfect for weekends, travel and whenever you want a watch that can take anything. The stainless steel case and bezel have a satin finish and the screw-down crown is knurled. The dial is an oil black, not a flat black as you might expect in a "military" watch. The large numbers and markers have a ton of luminous material and glow like beacons in a dark environment -- perfect for night viewing. The second hand is precisely registered with the second markings on the chapter ring. The crystal is a flat, hardened mineral crystal with an anti-reflective coating (presumably on the interior of the crystal) so there is very little reflection. This is a large 42mm diameter watch -- not including the crown {which is guarded with shoulders]. It is not clear if the woven, fabric band is nylon or some other material; it is well made and the holes for the clasp are reinforced with stainless steel rivets. I really like this watch and ... at a mere $105 ... this is a great buy.

Louis

Bold Watch
This watch is more impressive in person than in the photos I've seen. My first impression was that it is big or at least not too small. It has a certain heft to it that I like. It doesn't have a cheap feel.

The watch case is about 40mm in diameter (without the setting crown) and about 11mm in thickness. The lug width seemed to be about 21mm. The case has a brushed metal finish; although the screw on case back is bright and shiny. It could probably be used for signaling in an emergency. The only other shiny surface is a narrow ring around the base of the bezel; however, this is virtually unnoticeable. The edges of the case have been smoothed which helps with the day to day comfort of wearing the watch. The canvas strap is comfortable and has 7 metal eyelets (holes) for fastening to the wrist. My wrist is nearly 7.25" and I fasten it in the 5th hole (3rd from the end). The strap has two keepers and one of them is metal and the other is canvas. The metal keeper is strong with a bit more thickness than you might expect. I casually tried to bend it with some finger pressure, and it would not give. The buckle is also a little beefy and has the same level of smoothness as the case along with the same brushed metal finish. It nicely complements the rest of the watch and feels well made.

The large numerals provide a lot of surface area for the luminescence, and it's obvious this watch was designed to be easily read at night. I can still read the time throughout the night even after most of the glow intensity has gone. The dial is very black and contrasts well with the hands and numerals so it is also very easy to read in bright sunlight.

The 200m water resistance (WR) rating is a nice bonus. I'm not sure this is technically a dive watch since there is no rotating bezel so a 100m rating would have been sufficient, but 200m makes this watch even more versatile.

This watch is very basic but has a lot of practical appeal. I use it for a weekend or casual watch. Overall I strongly recommend it -- especially to an outdoor explorer or adventurer.

Quality watch that never needs a battery change
This is my 2nd Citizen. The first was a promaster dive watch I beat up hauling steel as a truck driver (never had a problem with function). For cosmetic reasons, I let that one get away years ago. Have worn a variety of hodge podge battery powered disposable watches since, and have grown somewhat tired of looking for a new watch every couple of years.

Was intrigued by the eco-drive technology and never having to open the case and replace a battery. Which always risks the integrity of the watch without sending it back to the factory.

I'm a one watch kind of guy. That's why I chose this black model which will easily do double duty.

This is no puny watch. It's substantial. The build quality is excellent. The lined canvas (maybe cordura nylon) band is quite good and durably built, although uncommon and for some may take getting used too. But thanks to the lining it is quite comfortable. Nice thing, due to the build of the watch it is easily replaceable with any after market brand.

The date window is small but serves it's purpose quite well.

And no batteries to replace. It's a keeper, especially at this price. Kudos to Citizen.