IWC Ingenieur Big Ingenieur Black / Alligator

Reference IW5005-01

About this watch

The IWC IW5005-01 Big Ingenieur Black / Alligator is a masterpiece of horological engineering, boasting a 45.50 mm stainless steel case that exudes elegance and sophistication. The striking black dial features stick and dot indexes, while the sleek hands ensure focus remains on the time, date, and power reserve indicator. Powered by the IWC caliber 51113 automatic movement, this watch showcases precision and durability with a 168-hour power reserve. The sapphire glass is scratch-resistant, and the open case back adds transparency to the intricate movement within. This luxury statement piece is suitable for formal occasions and casual outings alike, thanks to its balanced design and alligator leather strap. Whether you're seeking an investment or simply want a beautiful timepiece, this watch checks all the boxes.

Buy Now on Jomashop

This is an affiliate link

Key Features

45.50 mm stainless steel case
IWC caliber 51113 automatic movement
168-hour power reserve
Scratch-resistant sapphire glass
120 meters water resistance
Alligator leather strap
Open case back

Specifications

Brand

IWC

Family

Ingenieur

Model

Big Ingenieur Black / Alligator

Reference

IW5005-01

Movement

51113

Movement Features

Hours, Minutes, Seconds
Date
Power Reserve Indicator

Case

Stainless Steel 45.5mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

120

Current Listings

IWC Ingenieur 40mm Aqua Dial 2025 Complete Kit

IWC - IW328903 · $9,500

This IWC Ingenieur features a 40mm Aqua Dial and has a thin 10.7mm case with a 120 hour power reserve.

Condition: Incredible Preowned Condition
Case thickness: 10.7mm
Diameter: 40mm
Power reserve: 120 hours

Posted at

Dec 11, 2025, 9:33 AM

Active

View listing on r/WatchExchange

IWC Micro Adjust Clasp for Ingenieur 40 & Others

IWC - IW32890x · $375

Additional details on a preowned IWC clasp for the Ingenieur 40 and other models, allowing micro adjustment instead of the stock butterfly clasp.

Condition: Excellent condition
Compatible Watches: Not specified, but confirmed compatible with 40mm IW32890x model Ingenieur. Cross reference required for other models.

Posted at

Dec 11, 2025, 9:28 AM

Active

View listing on r/WatchExchange

IWC Ingenieur Automatic IW357001 $2,699

IWC - IW357001 · $2,699

The IWC Ingenieur IW3570 is a well-crafted watch that combines classic design with modern functionality. It has balanced proportions and quality finishing, making it a strong contender in its category.

Condition: Pre-owned with minor scratches on polished bezel
Case Size: 40mm diameter
Case Thickness: 10.3mm
Lug Width: 20mm

Posted at

Dec 10, 2025, 12:49 PM

Active

View listing on r/WatchExchange