Try It On

Case Diameter 40mm

Case Diameter 40mm

Try It On

Case Diameter 40mm

Wrist Size (in)

Your Wrist Size Circumference (in)

Band Size

The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.

150 - 205mm (5.9 - 8.1in)

Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".

How to choose the right case size

Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.


Read Our Watch Size Guide

Wrist Size (in)

Your Wrist Size Circumference (in)

Band Size

The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.

150 - 205mm (5.9 - 8.1in)

How to measure your wrist size

Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".

How to choose the right case size

Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.


Read Our Watch Size Guide

Delivery, Returns & Warranty

Delivery

Free Standard Shipping on most orders. Fan Shop orders do not qualify for free shipping. Buy two straps get free Standard Shipping.

Returns

Get your refund faster with easy online returns! Mail your items back with our return label within 30 days.

Warranty

Your Timex® watch includes a limited manufacturer’s warranty covering defects in materials and workmanship for a period of one year from the original purchase date.

Add optional protection with Extend in your cart or checkout for coverage against accidental damage and mechanical failure beyond the standard warranty.

TW2Y71800 Timex MK1 Automatic 40mm Leather Strap Watch Primary Image

Timex MK1 Automatic

40mm Leather Strap Watch
Sustainable This product has some sustainable features
  • Mechanical Automatic Movement

Regular price $309.00
Sale price $309.00 Regular price $309.00

Timex MK1 Automatic

40mm Leather Strap Watch
Sustainable This product has some sustainable features
  • Mechanical Automatic Movement

Regular price $309.00
Sale price $309.00 Regular price $309.00
TW2Y71800 Timex MK1 Automatic 40mm Leather Strap Watch Primary Image
Timex MK1 Automatic
40mm Leather Strap Watch

Classic Field Watch Design, Powered by You

We’re reinventing our beloved MK1®, enhancing its classic military aesthetic with a blue-tinted exhibition window on the case back that reveals the reliable Japanese automatic movement ticking inside. The 40mm recycled stainless-steel case and domed acrylic crystal encase a sleek black dial with both 12 and 24-hour Arabic indices and luminant hands for enhanced visibility. Completing the look is an eco-friendly natural leather strap sourced from the Leather Working Group (LWG) and equipped with quick-release...

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Specifications

Product ID

TW2Y71800

Mechanical Automatic Movement

Automatic watches have no battery. Instead, these "self winding" movements use the natural movement of your wrist as a power source.

Mechanical Automatic

Powered by You

Close-up of a mechanical watch movement on a black background

A mechanical automatic movement winds itself using the natural motion of your wrist — a rotor inside spins as you move, storing energy in a mainspring. This spring slowly releases power through a precise series of gears and an escapement, driving the hands in a smooth, sweeping motion. It’s a self-sustaining engine, no battery required. When worn daily, it stays powered continuously — keeping perfect time without needing to be reset.

Stainless Steel Case

This stainless-steel case is highly resistant to rust, corrosion, and tarnish, ensuring your watch remains in excellent condition over time. It's also hypoallergenic and incredibly strong.

  • Case Diameter 40 mm
  • Lug-to-Lug Distance 47 mm
  • Case Height 13.3 mm
  • Case Material Stainless Steel
  • Case Color Silver-Tone
  • Case Finish Brushed
  • Dial Color Black
  • Dial Markings Arabic (Full)
  • Battery Type Automatic

Quick-Release Leather Strap

There are no tools required to remove the spring bars that secure the attachment to the watch case. Refresh your look in seconds with endless attachment options.

  • Band / Lug Width 20 mm
  • Band Material Leather
  • Band Color Black
  • Band Buckle Buckle

Acrylic Crystal

A lightweight plastic polymer with excellent impact resistance and a warm vintage appearance that can be easily polished to remove scuffs.

Acrylic Crystal

Highly impact-resistant

Acrylic lens are a specialised form of plastic akin to Plexiglass and were commonly used in early to mid-20th century watches. It is a softer material that can be more prone to scratches but conversely is very shatter-resistant. Given its softness any scratches though can be buffed out. Acrylic lens are synonymous with vintage-inspired timepieces and thus can be found on our Marlin and Q Timex collections.

Acrylic Crystal

Highly impact-resistant

Clear plastic dome lid on a white background

Mineral Crystal

Enhanced durability

Sapphire Crystal

Scratch-Resistant

Round metallic object on a black background

Water Resistant to 50 Meters

This watch is suitable for light swimming. It is not suitable for snorkelling, or poolside diving. To maintain water resistance, do not press any buttons while underwater.

50m

Water Resistance

This watch is suitable for light swimming. It is not suitable for snorkelling, or poolside diving. To maintain water resistance, do not press any buttons while underwater.

30m

Light rain, sweat & splashes.

Icon of a cloud with raindrops on a blue background

50m

Short swims.

100m

Swimming, snorkeling & surfing.

200m

Recreational scuba-diving.

Diver icon on a blue background

300m

Deep-sea exploration.

Try It On

Case Diameter 40mm

Case Diameter 40mm

Try It On

Case Diameter 40mm

Wrist Size (in)

Your Wrist Size Circumference (in)

Band Size

The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.

150 - 205mm (5.9 - 8.1in)

Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".

How to choose the right case size

Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.


Read Our Watch Size Guide

Wrist Size (in)

Your Wrist Size Circumference (in)

Band Size

The band for this watch can be adjusted to fit comfortably between the following wrist circumferences.

150 - 205mm (5.9 - 8.1in)

How to measure your wrist size

Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".

How to choose the right case size

Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.


Read Our Watch Size Guide
  • Our Promise for the Next 170 Years

    Since 1854, no other watchmaker has ever been able to match our ability to put a well-crafted watch on your wrist, while leaving money in your pocket. Every Timex is a testament to our legendary durability and value, and a reminder to make time yours.

    Read more about us
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  • Crafted to Keep Our Planet Ticking

    We are proud pioneers in making timeless watches that are environmentally-friendly, beautifully crafted and can take a licking and keep on ticking.

    Read more about our goals
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