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.

Buy Now on Jomashop

This is an affiliate link

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 Moonphase King Gold 42mm 18k Rose Gold 647.OX.1138.RX

Hublot - 647.OX.1138.RX

Posted at

Mar 12, 2026, 2:14 PM

Active

View listing on r/WatchExchange

(2009) Hublot Big Bang Mother of Pearl 341.SG.600LS.114 341 Diamonds

Hublot - 341.SG.600LS.114 · $8,950

This 2009 Hublot Big Bang Mother of Pearl features a full set with box and papers, including an original strap and third-party strap alternative.

Condition: Scratches around the case from normal use
Case Material: Mother of Pearl
Diamonds: 341

Posted at

Mar 12, 2026, 4:05 AM

Active

View listing on r/WatchExchange

Hublot Big Bang Unico 44mm Skeleton Dial Titanium 411.NX.1170.RX Box & Papers

Hublot - 411.NX.1170.RX · $8,995

The Hublot Big Bang Unico is a luxurious timepiece crafted from premium-grade titanium, featuring a sleek and modern design.

Condition: Excellent condition with little to no signs of wear
Case size: 44mm diameter
Case material: Titanium
Bezel material: Titanium

Posted at

Mar 11, 2026, 9:20 AM

Active

View listing on r/WatchExchange

HUBLOT Big Bang Unico 42mm White Ceramic 441.HX.1171.RX

Hublot - 441.HX.1171.RX · $16,900

The Hublot Big Bang Unico White reference features a striking skeleton dial framed by a fixed white ceramic bezel, housed in a 42mm white ceramic case with a bold yet refined monochromatic aesthetic. The openworked dial highlights the chronograph configuration and modern architectural design that define the Big Bang Unico collection.

Condition: Excellent
Case size: 42mm
Materials: White ceramic
Straps included: 1 (white rubber)

Posted at

Mar 6, 2026, 5:13 PM

Active

View listing on r/WatchExchange