Hublot Big Bang Big Bang Alarm Repeater Titanium

Reference 403.NM.0123.RX

About this watch

The Hublot Big Bang Alarm Repeater Titanium (Model: 403.NM.0123.RX) is a masterpiece of luxury watchmaking. This limited edition timepiece, produced in only 250 units, showcases the brand's commitment to quality and craftsmanship. At its heart lies the Hublot caliber HUB5003, a hand-wound movement that boasts a 72-hour power reserve and a frequency of 28,800 vibrations per hour. The watch features a stunning combination of titanium and ceramic, providing both durability and a sleek, modern aesthetic. With a diameter of 45 mm, it makes a bold statement on the wrist, while its lightweight titanium ensures comfort even for larger watches. Protected by a scratch-resistant sapphire crystal, this timepiece is not only visually striking but also built to withstand daily wear. The Big Bang Alarm Repeater Titanium offers an array of functions, including hours, minutes, and small seconds, as well as an adjustable 24-hour hand and date display. Its standout feature, however, is its alarm function, which produces a distinct sound when activated. This watch is more than just a timepiece; it's a statement that embodies the essence of luxury watchmaking.

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Key Features

Hand-wound movement (HUB5003)
72-hour power reserve
28,800 vibrations per hour
Titanium and ceramic construction
45mm diameter
Sapphire crystal protection
Adjustable 24-hour hand and date display
Alarm function with steel hammer strike

Specifications

Brand

Hublot

Family

Big Bang

Model

Big Bang Alarm Repeater Titanium

Reference

403.NM.0123.RX

Movement

hub5003

Movement Features

Hours, Minutes, Small Seconds, Additional 24 Hour Hand (adjustable), Day / Night Indication
Date
Alarm

Case

45mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

100

Current Listings

Hublot Spirit of Big Bang Japan Limited – Ref. 601.NE.0172.LR.JPN17 – $12,900

Hublot - 601.NE.0172.LR.JPN17 · $12,900

a bold and highly distinctive Hublot Spirit of Big Bang Japan Limited Edition, a Japan-exclusive release with a black ceramic tonneau case.

Condition: excellent condition
Movement: HUB4700 Automatic Skeleton Chronograph (Column Wheel | ~50hr Power Reserve)
Case: Black Ceramic Tonneau (45mm x 51mm)
Dial: Skeletonized with applied indices, chronograph subdials & date

Posted at

Feb 17, 2026, 2:23 PM

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Hublot Big Bang Aero Bang Carbon – Ref 311.QX.1124.RX – Skeleton Dial, Carbon Case, Full Set + White Rubber Strap

Hublot - 311.QX.1124.RX · $9,450

The Hublot Big Bang Aero Bang Carbon features a skeletonized dial and a carbon fiber case, revealing the HUB4214 automatic chronograph movement.

Condition: Excellent condition with minimal signs of wear
Case Diameter: 44mm
Case Material: Carbon Fiber
Movement: HUB4214 Automatic Chronograph

Posted at

Feb 13, 2026, 6:09 PM

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Hublot Big Bang Earl Grey Chronograph 41mm Tantalum Dial 342.ST.5010.ST.1104

Hublot - 342.ST.5010.ST.1104 · $7,650

This listing is for a Hublot Big Bang Earl Grey Chronograph with a 41mm tantalum dial.

Condition: Very good, minimal handling marks
Case material: Tantalum
Diameter: 41mm

Posted at

Feb 13, 2026, 10:06 AM

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Hublot Big Bang 44mm 301.SM.1770.RX 44mm Carbon Dial W/PAPERS

Hublot - 301.SM.1770.RX · $7,299

This Hublot Big Bang timepiece features a carbon dial and black ceramic bezel, measuring 44mm in diameter. It comes with an original warranty card and usb reader.

Condition: pre-owned with typical light cosmetic wear
Case diameter: 44mm
Movement type: automatic
Water resistance: 100m depth rating

Posted at

Feb 11, 2026, 9:26 PM

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Hublot Big Bang 44mm 301.SM.1770.RX 44mm Carbon Dial W/PAPERS

Hublot - 301.SM.1770.RX · $7,299

This Hublot Big Bang features a 44mm carbon dial and black ceramic bezel, powered by an automatic movement. It has a water resistance of 100m and a power reserve of 42 hours.

Condition: nice pre-owned condition with typical light cosmetic wear on the case
Diameter: 44mm
Case material: Stainless Steel
Band material: Black Lined Rubber

Posted at

Feb 11, 2026, 9:24 PM

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