IWC
IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402
The IWC Aquatimer Perpetual Calendar Digital Date-Month (reference IW379402) is a 49 mm titanium (rubber-coated) with 5N gold bezel watch with a blue dial. It runs on the automatic caliber 89801 with a 68-hour power reserve and is water resistant to 100 m. It is no longer in production.
Specifications
Case
- Reference
- IW379402
- Collection
- Aquatimer
- Case size
- 49 mm
- Thickness
- 19.4 mm
- Case material
- Titanium (rubber-coated) with 5N gold bezel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- Rubber strap
Dial and bezel
- Dial
- Blue
Movement
- Movement
- Automatic
- Caliber
- 89801
- Power reserve
- 68 hours
- Frequency
- 28,800 vph
- Jewels
- 51
- Functions
- Perpetual calendar, Digital date and month, Flyback chronograph, Rotating bezel (SafeDive)
Production
- Production
- Discontinued
Dial versions
This reference was made with these dials and finishes.
IW379402 Blue
Blue
How it compares within the Aquatimer family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| IW379402 (This watch) | 49 mm | Titanium (rubber-coated) with 5N gold bezel | Blue | 89801 | — |
| IW328801 | 42 mm | Stainless steel | Blue | 32111 | — |
| IW328802 | 42 mm | Stainless steel | Black | 32111 | — |
| IW329001 | 42 mm | Stainless steel | Black | 30120 | 2014–2022 |
| IW329002 | 42 mm | Stainless steel | Black | 30120 | 2014–2022 |
| IW329003 | 42 mm | Stainless steel | Silver | 30120 | — |
| IW356801 | 44 mm | Stainless steel | Black | 30110 | 2009–2011 |
| IW376705 | 44 mm | Rubber-coated stainless steel | Black | 79320 | 2009–2014 |
| IW379401 | 49 mm | 18k 5N gold | Black | 89801 | — |
About the Aquatimer family
The Aquatimer was introduced in 1967 as IWC's first dive watch, with an internal rotating bezel and water resistance of 200 metres. Later generations moved to an external bezel, and from 2014 IWC used a system that combines an external bezel with an internal one for safer timing.
The catalog includes automatics and chronographs with calibers such as the 30110, 32111 and 79320, in stainless steel, rubber-coated steel, 18k gold and IWC's Ceratanium. Dealers identify the generation and material from the reference and check the bezel action, strap and papers.
Quick answers
- What size is the IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402?
- The IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402 has a 49 mm case, 19.4 mm thick.
- What movement does the IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402 use?
- It uses the automatic caliber 89801, with a 68-hour power reserve.
- How water resistant is the IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402?
- It is water resistant to 100 metres.
- Is the IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402 still in production?
- Discontinued.
- What is the IWC Aquatimer Perpetual Calendar Digital Date-Month IW379402 made of?
- The case is titanium (rubber-coated) with 5N gold bezel. Bracelet or strap: Rubber strap.
Catalog facts checked October 2026.