The Basics

The HM4 Only Watch featuring a miniature flying panda bear is a magical synthesis of children’s dreams and cutting-edge haute horlogerie. While we dream throughout our lives, there is one specific dream that children experience more frequently than adults: the ability to fly! It isn’t known why dreams of flight diminish from adolescence; however, it may be that adult imaginations become more constrained as they are rooted in the realities of everyday life. Children with duchenne muscular dystrophy suffer from progressively diminished mobility leading to paralysis; however, while their bodies may be trapped, their young spirits can escape in their dreams and imaginations. HM4 Only Watch offers children a flight of fantasy, a reason to smile, and a wild ride through time and space! HM4 Only Watch features the dream-world scenario of a solid gold panda bear riding on top of the HM4 jet, which he controls with reins made of twisted gossamer filaments made of gold. The panda was hand-carved and then cast in 18k white gold using the “lost wax” technique. And while the HM4 Only Watch is a celebration of the fantasy of children’s dreams, there is also a feature for those obliged to ground their feet in reality from time to time: the panda and his reins have been micro-engineered to be completely detachable so that HM4 transforms from a flying machine into a Horological Machine.

Brand: MB&F
Family: Horological Machines
Reference: 41.TSL.OW
Name: Horological Machine N°4 HM4 Only Watch
Produced: 2011 – 2011
Limited: Yes, 1 unit

Below is a detailed look at MB&F’s model 41.TSL.OW from Horological Machines watch family, including the price, case details and movement features.

MB&F Horological Machines 41.TSL.OW

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The Details

MB&F’s Horological Machine N°4 HM4 Only Watch (41.TSL.OW) was originally released in 2011 – 2011. This watch features a hand-wound movement beating at a frequency of 21600 bph ( 3 Hz) to provide a 72-hour power reserve when fully wound.

The Case

The titanium, sapphire case measures 54mm in diameter and roughly 24mm 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 41.TSL.OW water resistance is not available. This does not mean this watch is not water resistant. A display caseback is over the back of the watch case.

Material: Titanium, Sapphire
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 54mm
Height: 24mm
Lug Width: N/Amm
W/R: N/A

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Horological Machines 41.TSL.OW movement is a powered by caliber HM4 made by MB&F. The 50-jewel hand-wound movement is mm in diameter. Its balance wheel oscillates at 21,600 semi-oscillations per hour or 3 Hz. This movement offers a 72-hour power reserve.

Type: Hand-Wound
Brand: MB&F
Caliber: HM4
Base: N/A
Display: Analog
Diameter: mm
Jewels: 50
Reserve: 72 hours
Frequency: 21600 bph
Time: Hours, Minutes
Chronograph:
Additionals: Power Reserve Indicator

The Price

How much does the MB&F’s Horological Machines 41.TSL.OW cost? This watch was introduced in 2011 and has been in MB&F’s collection for around . This watch is a limited edition with just 1 unit. 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°4 HM4 Only Watch
  • Reference Number: 41.TSL.OW
  • Limited: Yes, 1 unit

Case & Dial:

  • Material: Titanium, Sapphire
  • Glass: Sapphire
  • Back: Display
  • Diameter: 54
  • Thickness: 24
  • Lug Width: N/A
  • Dial Color: Black
  • Indexes: Arabic Numerals and Proprietary-shaped hands
  • Water Resistance: N/A meters

Movement:

  • Winding: Hand-Wound
  • Brand: MB&F
  • Caliber: HM4
  • Display: Analog
  • Diameter: mm
  • Jewels: 50
  • Power Reserve: 72 hours
  • Frequency: 21600 bph
  • Functions: Hours, Minutes

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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