Item #: 20122878

Men's Citizen Eco Drive® Nighthawk Grey IP Chronograph Watch with Grey Dial (Model: CA4377-53H)

Name: Men's Citizen Eco Drive® Nighthawk Grey IP Chronograph Watch with Grey Dial (Model: CA4377-53H)
Brand: Citizen
SKU: 20122878
Price: 402.5 USD
Availability: InStock
Rating: 4.1026 (39 reviews)

$402.50

$575.00

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Go the distance with this Citizen Eco Drive® Nighthawk chronograph flight watch. Crafted in gunmetal Grey ion-plated stainless steel, this redesigned style features a 43.0mm case, charcoal Grey dial, date display between the four and five o'clock hour, dark Grey hands and markers, dual time, chronograph sub-dials, tachymeter, and red second hand. The gunmetal and Grey granite ion-plated stainless steel bracelet secures with a fold-over clasp. Ensuring accuracy, the Japanese quartz movement keeps you right on time. Water-resistant to 200 meters, this wristwatch includes a five-year limited manufacturer warranty, with an additional one-year warranty upon registering your watch with Citizen. We are an authorized Citizen dealer.

Item #: 20122878

Content & Care

Typographic errors are subject to correction. Merchandise enlarged to show detail and may not always be exactly as pictured. Promotions, prices, styles and availability may vary by store and online.

Warranty
5 Year Limited Manufacturer’s Warranty, with an additional 1 Year warranty upon registering your watch with Citizen.

Typographic errors are subject to correction. Merchandise enlarged to show detail and may not always be exactly as pictured.

Stone(s)

Stone Type
No Stone

Metal(s)

Metal Type
Stainless Steel

Metal Color Grey

Metal Finish Polished

Metal Plating Type Ion-Plated

Plating Color Grey

Watch Design

Model Number CA4377-53H

Watch Brand Citizen

Watch Style Bracelet

Movement
Quartz

Watch Display Type Chronograph

Watch Power Source Battery Rechargeable by Light

Watch Resistance in Meters 200 m

Watch Band Style Bracelet

Watch Band Color Grey

Watch Band Material Stainless Steel

Watch Clasp Type Fold-Over

Watch Attachment No

Watch Case Size 43.0 mm

Watch Dial Shape Round

Watch Dial Color Grey

Shipping
Ship to you, to your store, or to a UPS Access Point near you. Free shipping offer may be modified or terminated at any time without notice. Learn More

Returns & Exchanges
Your online purchase may be returned to any of our stores or returned by mail to our distribution center.
Returns are allowed within 30 days from the purchase (shipment) date and exchanges within 60 days of the purchase (shipment) date for jewelry, and within 30 days from the purchase (shipment) date for watches. Jewelry must be in good condition with all original certificates and accessories. Watches must be unworn, unaltered and in original condition to be accepted for return or exchange.

Go the distance with this Citizen Eco Drive® Nighthawk chronograph flight watch. Crafted in gunmetal Grey ion-plated stainless steel, this redesigned style features a 43.0mm case, charcoal Grey dial, date display between the four and five o'clock hour, dark Grey hands and markers, dual time, chronograph sub-dials, tachymeter, and red second hand. The gunmetal and Grey granite ion-plated stainless steel bracelet secures with a fold-over clasp. Ensuring accuracy, the Japanese quartz movement keeps you right on time. Water-resistant to 200 meters, this wristwatch includes a five-year limited manufacturer warranty, with an additional one-year warranty upon registering your watch with Citizen. We are an authorized Citizen dealer.

Item #: 20122878

Content & Care

Typographic errors are subject to correction. Merchandise enlarged to show detail and may not always be exactly as pictured. Promotions, prices, styles and availability may vary by store and online.

Warranty
5 Year Limited Manufacturer’s Warranty, with an additional 1 Year warranty upon registering your watch with Citizen.

Typographic errors are subject to correction. Merchandise enlarged to show detail and may not always be exactly as pictured.

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Ring Sizing Guide

Find your size by measuring either a string you've wrapped around your finger or by using a ring that fits. Then, use the ring size chart below to find your size.

Take a piece of non-stretchable string, ribbon, thread, or a thin strip of paper. Wrap it comfortably around your ring finger, close to the knuckle. With a pen, carefully mark the spot where the string overlaps. For accuracy, make the marks small. Unwrap your marked length. With a ruler, measure it in millimeters. Find your measurement below.

Standard (US) Size Internal Diameter European Size

3 14.0 mm -

3.5 14.4 mm 46

4 14.8 mm 47

4.5 15.2 mm 48

5 15.6 mm 50

5.5 16.0 mm 51

6 16.45 mm 52

6.5 16.9 mm 53

7 17.3 mm 54

7.5 17.7 mm 56

8 18.2 mm 57

8.5 18.6 mm 58

9 19.0 mm 60

9.5 19.4 mm 61

10 19.8 mm 62

10.5 20.2 mm 64

11 20.6 mm 65

11.5 21.0 mm 66

12 21.4 mm 67

12.5 21.8 mm 69

13 22.2 mm 70

13.5 22.6 mm 71

Need a custom size? Chat With Us

Still not sure about your ring size? Use our printable ring sizing chart and a ring that fits you. Follow the instructions on the page to find your correct size.

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Men's Citizen Eco Drive® Nighthawk Grey IP Chronograph Watch with Grey Dial (Model: CA4377-53H)

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Diamond Carat Weights and Variance Ranges

Carat Weight Variance Range

< 1 carat

Diamond Accent 0.001 - 0.039

1/20 carat .04-.06

1/10 carat .085-.11

1/8 carat .115-.14

1/6 carat .145-.17

1/5 carat .18-.22

1/4 carat .23-.28

1/3 carat .29-.36

3/8 carat .37-.44

1/2 carat .45-.57

5/8 carat .58-.68

3/4 carat .69-.79

7/8 carat .80-.94

1 carat .95-1.11

1/5 carats 1.18 - 1.22

1/4 carats 1.23-1.28

1/3 carats 1.29-1.36

3/8 carats 1.37-1.44

1/2 carats 1.45-1.57

5/8 carats 1.58-1.68

3/4 carats 1.69-1.79

7/8 carats 1.80-1.94

2 carats 1.95-2.11

1/8 carats 2.115 - 2.14

1/6 carats 2.145 - 2.17

1/5 carats 2.18 - 2.22

1/4 carats 2.23 - 2.28

1/3 carats 2.29 - 2.36

3/8 carats 2.37 - 2.44

1/2 carats 2.45 - 2.57

5/8 carats 2.58 - 2.68

3/4 carats 2.69 - 2.79

7/8 carats 2.80 - 2.94

3 carats 2.95-3.11

1/8 carats 3.115 - 3.14

1/4 carats 3.23 - 3.28

1/3 carats 3.29 - 3.36

3/8 carats 3.37 - 3.44

1/2 carats 3.45 - 3.57

5/8 carats 3.58 - 3.68

3/4 carats 3.69 - 3.79

7/8 carats 3.80 - 3.94

4 carats 3.95-4.11

1/8 carats 4.115 - 4.14

1/6 carats 4.145 - 4.17

1/5 carats 4.18 - 4.22

1/4 carats 4.23 - 4.28

1/3 carats 4.29 - 4.36

3/8 carats 4.37 - 4.44

1/2 carats 4.45 - 4.57

5/8 carats 4.58 - 4.68

3/4 carats 4.69 - 4.79

7/8 carats 4.80 - 4.94

5 carats
4.95-5.11

1/8 carats 5.115 - 5.14

1/6 carats <5.145 - 5.17

1/5 carats 5.18 - 5.22

1/4 carats 5.23 - 5.28

1/3 carats 5.29 - 5.36

3/8 carats 5.37 - 5.44

1/2 carats 5.45 - 5.57

5/8 carats 5.58 - 5.68

3/4 carats 5.69 - 5.79

7/8 carats 5.80 - 5.94

6 carats
5.95-6.11

1/8 carats 6.115 - 6.14

1/6 carats 6.145 - 6.17

1/5 carats 6.18 - 6.22

1/4 carats 6.23 - 6.28

1/3 carats 6.29 - 6.36

3/8 carats 6.37 - 6.44

1/2 carats 6.45 - 6.57

5/8 carats 6.58 - 6.68

3/4 carats 6.69 - 6.79

7/8 carats 6.80 - 6.94

7 carats 6.95-7.11

Diamond Carat, Clarity, Color, and Cut

The 4Cs are a way to compare diamond quality and value. Each "C" has its own grading scale for evaluating quality. Explore them below.

People often mistake carats as a measurement of size, but they actually measure approximate weight (CTW = Carat Total Weight). Typically, a heavier diamond appears larger, but size isn't everything. Two diamonds of equal carat weight can have significantly different value when the other Cs are considered.

Carat Weight Millimeter Size (approximate) Millimeter Size(approx.)

0.05 ct 2.5 mm

0.25 ct 4.1 mm

0.50 ct 5.2 mm

0.75 ct 5.8 mm

1.00 ct 6.5 mm

1.25 ct 6.9 mm

1.50 ct 7.4 mm

2.00 ct 8.2 mm

Like any rock or mineral, diamonds can have flaws. Choosing a diamond with a difficult-to-detect inclusion or blemish can be a great way to save on cost without sacrificing beauty.

The GIA Diamond Clarity Grade scale has 11 grades in all. Most jewelry stores carry VVS as their highest grade. VS or SI are considered by most to be "fine quality" diamonds.

Grade Description

F Flawless inside and out

IF Internally flawless —
blemishes on the surface
but not inside the diamond

VVS1,
VVS2 Very, very slightly included

VS1, VS2 Very slightly included

SI1, SI2 Slightly included

I1, I2, I3 Included and detectable
with the eye

Diamonds come out of the earth in many different colors. The market has traditionally valued white diamonds higher than others, and the grading scale offers five groups of 23 letters to reflect that.

Grade Description

D Top of the scale —
colorless, rarest and most
expensive

G Near colorless

I Still appears white, but
more affordable

J Human eye begins to
detect a yellow tint

Z Unmistakably yellow in
color

Cut refers to a stone's shape, facet, and polish. Sometimes diamonds are cut so they're heavier, fetching more value for their carat weight. Sometimes they're cut to hide or minimize inclusions by expert diamond cutters skilled at bringing the brilliance out of each diamond they work with.

Grade Description

EX Excellent

VG Very Good

G Good

F Fair

P Poor

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Men's Citizen Eco Drive® Nighthawk Grey IP Chronograph Watch with Grey Dial (Model: CA4377-53H)

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Metal(s)
Metal Type	Stainless Steel
Metal Color	Grey
Metal Finish	Polished
Metal Plating Type	Ion-Plated
Plating Color	Grey

Watch Design
Model Number	CA4377-53H
Watch Brand	Citizen
Watch Style	Bracelet
Movement	Quartz
Watch Display Type	Chronograph
Watch Power Source	Battery Rechargeable by Light
Watch Resistance in Meters	200 m
Watch Band Style	Bracelet
Watch Band Color	Grey
Watch Band Material	Stainless Steel
Watch Clasp Type	Fold-Over
Watch Attachment	No
Watch Case Size	43.0 mm
Watch Dial Shape	Round
Watch Dial Color	Grey

Standard (US) Size	Internal Diameter	European Size
3	14.0 mm	-
3.5	14.4 mm	46
4	14.8 mm	47
4.5	15.2 mm	48
5	15.6 mm	50
5.5	16.0 mm	51
6	16.45 mm	52
6.5	16.9 mm	53
7	17.3 mm	54
7.5	17.7 mm	56
8	18.2 mm	57
8.5	18.6 mm	58
9	19.0 mm	60
9.5	19.4 mm	61
10	19.8 mm	62
10.5	20.2 mm	64
11	20.6 mm	65
11.5	21.0 mm	66
12	21.4 mm	67
12.5	21.8 mm	69
13	22.2 mm	70
13.5	22.6 mm	71

Carat Weight	Variance Range
< 1 carat
Diamond Accent	0.001 - 0.039
1/20 carat	.04-.06
1/10 carat	.085-.11
1/8 carat	.115-.14
1/6 carat	.145-.17
1/5 carat	.18-.22
1/4 carat	.23-.28
1/3 carat	.29-.36
3/8 carat	.37-.44
1/2 carat	.45-.57
5/8 carat	.58-.68
3/4 carat	.69-.79
7/8 carat	.80-.94
1 carat	.95-1.11
1/5 carats	1.18 - 1.22
1/4 carats	1.23-1.28
1/3 carats	1.29-1.36
3/8 carats	1.37-1.44
1/2 carats	1.45-1.57
5/8 carats	1.58-1.68
3/4 carats	1.69-1.79
7/8 carats	1.80-1.94
2 carats	1.95-2.11
1/8 carats	2.115 - 2.14
1/6 carats	2.145 - 2.17
1/5 carats	2.18 - 2.22
1/4 carats	2.23 - 2.28
1/3 carats	2.29 - 2.36
3/8 carats	2.37 - 2.44
1/2 carats	2.45 - 2.57
5/8 carats	2.58 - 2.68
3/4 carats	2.69 - 2.79
7/8 carats	2.80 - 2.94
3 carats	2.95-3.11
1/8 carats	3.115 - 3.14
1/4 carats	3.23 - 3.28
1/3 carats	3.29 - 3.36
3/8 carats	3.37 - 3.44
1/2 carats	3.45 - 3.57
5/8 carats	3.58 - 3.68
3/4 carats	3.69 - 3.79
7/8 carats	3.80 - 3.94
4 carats	3.95-4.11
1/8 carats	4.115 - 4.14
1/6 carats	4.145 - 4.17
1/5 carats	4.18 - 4.22
1/4 carats	4.23 - 4.28
1/3 carats	4.29 - 4.36
3/8 carats	4.37 - 4.44
1/2 carats	4.45 - 4.57
5/8 carats	4.58 - 4.68
3/4 carats	4.69 - 4.79
7/8 carats	4.80 - 4.94
5 carats	4.95-5.11
1/8 carats	5.115 - 5.14
1/6 carats	<5.145 - 5.17
1/5 carats	5.18 - 5.22
1/4 carats	5.23 - 5.28
1/3 carats	5.29 - 5.36
3/8 carats	5.37 - 5.44
1/2 carats	5.45 - 5.57
5/8 carats	5.58 - 5.68
3/4 carats	5.69 - 5.79
7/8 carats	5.80 - 5.94
6 carats	5.95-6.11
1/8 carats	6.115 - 6.14
1/6 carats	6.145 - 6.17
1/5 carats	6.18 - 6.22
1/4 carats	6.23 - 6.28
1/3 carats	6.29 - 6.36
3/8 carats	6.37 - 6.44
1/2 carats	6.45 - 6.57
5/8 carats	6.58 - 6.68
3/4 carats	6.69 - 6.79
7/8 carats	6.80 - 6.94
7 carats	6.95-7.11

	Carat Weight	Millimeter Size (approximate)	Millimeter Size(approx.)
	0.05 ct	2.5 mm
	0.25 ct	4.1 mm
	0.50 ct	5.2 mm
	0.75 ct	5.8 mm
	1.00 ct	6.5 mm
	1.25 ct	6.9 mm
	1.50 ct	7.4 mm
	2.00 ct	8.2 mm

	Grade	Description
	F	Flawless inside and out
	IF	Internally flawless — blemishes on the surface but not inside the diamond
	VVS1, VVS2	Very, very slightly included
	VS1, VS2	Very slightly included
	SI1, SI2	Slightly included
	I1, I2, I3	Included and detectable with the eye

	Grade	Description
	D	Top of the scale — colorless, rarest and most expensive
	G	Near colorless
	I	Still appears white, but more affordable
	J	Human eye begins to detect a yellow tint
	Z	Unmistakably yellow in color

Men's Citizen Eco Drive® Nighthawk Grey IP Chronograph Watch with Grey Dial (Model: CA4377-53H)

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