The Basics

The MB&F Horological Machine N°8 Moonmachine 2 was introduced at SIHH 2018 as a the second cooperation between MB&F and independent Finnish watchmaker Stepan Sarpaneva. It is based on the HM8 platform, to which a moonphase is added – projected via an optical prism, just like the hours and minutes. Reference 81.BTL.B has a partially black coated titanium case.

Brand: MB&F
Family: Horological Machines
Reference: 81.BTL.B
Name: Horological Machine N°8 HM8 Moonmachine 2 Black Titanium
Produced: 2018
Limited: Yes, 12 units

Below is a detailed look at MB&F’s model 81.BTL.B from Horological Machines watch family, including the price, case details and movement features.

MB&F Horological Machines 81.BTL.B

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The Details

MB&F’s Horological Machine N°8 HM8 Moonmachine 2 Black Titanium (81.BTL.B) was originally released in 2018. This watch features a automatic movement beating at a frequency of 28800 bph ( 4 Hz) to provide a 42-hour power reserve when fully wound.

The Case

The titanium case measures 49mm in diameter and roughly 19.5mm thick. The round case is paired with a black color dial with proprietary-shaped hands, and a arabic numerals hour markers and minute track, covered by a sapphire glass. MB&F’s Horological Machines model 81.BTL.B is water resistant up to 30 meters (98 ft). A display caseback is over the back of the watch case.

Material: Titanium
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 49mm
Height: 19.5mm
Lug Width: N/Amm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Horological Machines 81.BTL.B movement is a powered by caliber HM8 Moonmachine made by MB&F. The 30-jewel automatic movement is mm in diameter. Its balance wheel oscillates at 28,800 semi-oscillations per hour or 4 Hz. This movement offers a 42-hour power reserve.

Type: Automatic
Brand: MB&F
Caliber: HM8 Moonmachine
Base: Girard-Perregaux GP03300
Display: Analog
Diameter: mm
Jewels: 30
Reserve: 42 hours
Frequency: 28800 bph
Time: Minutes, Jumping Hours
Chronograph:
Additionals:

The Price

How much does the MB&F’s Horological Machines 81.BTL.B cost? This watch was introduced in 2018 and has been in MB&F’s collection for around . This watch is a limited edition with just 12 pieces released. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available

For more information, visit MB&F online.

Specifications:

  • Brand: MB&F
  • Model: Horological Machine N°8 HM8 Moonmachine 2 Black Titanium
  • Reference Number: 81.BTL.B
  • Limited: Yes, 12 units

Case & Dial:

  • Material: Titanium
  • Glass: Sapphire
  • Back: Display
  • Diameter: 49
  • Thickness: 19.5
  • Lug Width: N/A
  • Dial Color: Black
  • Indexes: Arabic Numerals and Proprietary-shaped hands
  • Water Resistance: 30 meters

Movement:

  • Winding: Automatic
  • Brand: MB&F
  • Caliber: HM8 Moonmachine
  • Display: Analog
  • Diameter: mm
  • Jewels: 30
  • Power Reserve: 42 hours
  • Frequency: 28800 bph
  • Functions: Minutes, Jumping Hours

About MB&F

MB&F logo

Maximilian Busser and Friends, normally shortened down to MB&F, is a Swiss watch brand founded by Maximilian Busser in July 2005 and based in Geneva, Switzerland.

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