IWC IW9270-20 Moon Phase Watch
Overview
The IWC Grand Complication IW9270-20 is a 42mm men's automatic watch with a platinum case and a black analog dial protected by sapphire crystal. It uses a 79091 caliber self-winding mechanical movement that can be manually wound and hacked (the second hand stops when the crown is pulled out). It ticks 8 times per second which gives the second hand a smoother movement than quartz watches which tick once per second. The watch should run for up to 44 hours when fully wound and will self-wind when moved.
The IW9270-20 is currently ranked #87 in popularity out of 345 watches in this catalog. No retailer link is on file for .com; current availability is unknown. There are two model numbers for this watch which indicate different distribution locations, a different band type, or different text on the dial. The alternate model number is IW3770-17. This watch is part of a family of five watches that are identical except for their color or strap. You can see the other variations in this family as well as other similar models on the left side of the page. By clicking the checkbox under a similar model you can compare that model with this one side-by-side. We use nearly 100 different weighted criteria to calculate which models are the most similar to one another.
The case of the IW9270-20 measures approximately 42mm wide (not including the crown) by 16mm thick and is water resistant to 10 meters. The platinum bezel is fixed (cannot be rotated). The gap between the lugs is 20mm and the bracelet band can be adjusted to fit using a link removal tool or removed using a band removal tool to be replaced with another band.
The IW9270-20 provides the following features and complications:
- Second hand
- Seconds subdial
- Minute hand
- Hour hand
- Chronograph that includes subdials for hours and minutes with a minimum resolution of 1/4 second and a maximum duration of 720 minutes. The central second hand is used by the chronograph. When the chronograph is not in use this hand is stationary. Seconds are shown on the seconds subdial.
- Day subdial to show the day of the week
- Date subdial to show the day of the month
- Moonphase window to show the phase of the moon
- Month subdial
- Year window
Specifications [edit]
Full specifications are listed below. Please report any errors by clicking the edit link above then use the appropriate 
icon to provide your input.
General
- Retailers No retailer link on file for .com
Search: Amazon | eBay | Chrono24 - Popularity
#87 of 345 - Brand IWC
- Style Dress, Chronograph
- Gender Men's
Movement
- Type Automatic
- Caliber 79091
- Jewels 75
- Beats per Hour 28,800 bph(8 bps)
- Power Reserve 44 Hours
- Manual Winding Yes
- Hacking Yes
- Instructions
Case
- Case Width
42mm(without crown) - Case Thickness 16mm
- Case Shape Round
- Case Material Platinum
- Crystal Material Sapphire
- Water Resistance 10 Meters
- Crown Position 03:00
- Screw Down Crown No
- Second Crown No
Complications
- Chrono Maximum 720 Minutes
- Chrono Minimum 1/4 of a Second
- Chrono Minutes Yes
- Chrono Hours Yes
- Second Hand Yes
- Seconds Subdial Yes
- Minute Hand Yes
- Hour Hand Yes
- Day Subdial Yes
- Date Subdial Yes
- Moonphase Yes
- Month Subdial Yes
- Year Indicator Yes
Band
- Band Width 20mm
- Replaceable Band Yes
- Band Material Bracelet
- Band Color Silver
Dial
- Dial Color Black
- Hour Markings Bars
- Subdial Position 3-6-9-12
- On the Dial
"Swiss Made"
Bezel
- Bezel Color Silver
- Bezel Function Fixed
- Bezel Material Platinum
- On the Bezel Nothing
Inner Bezel / Chapter Ring / Outer Dial
- Inner Bezel Color Black
- On Inner Bezel Bars
Hand Colors
- Hour Hand Silver
- Minute Hand Silver
If you see anything that seems incorrect please let us know.
Back