Phone: 01442-801130 | Intl: +44 1442 801130 Phone: 01442-801130 | Intl: +44 1442 801130 
Mens Watch | Manual Wind Movement
OUR PRICE: DISCONTINUED
RRP: £140,000
| Availability | Estimated 30 Day Delivery Want it sooner? |
| Warranty | All papers included |
| VAT-free Price | £108,333 For shipping outside the UK and qualifying BFPO addresses only |
| Brand | A. Lange & Sohne |
| Series | Lange 31 45.9mm |
| Model Number | 130.025 |
| Size | Mens |
| Case Material | Platinum |
| Dial Colour | Rhodium |
| Bracelet/Strap | Alligator/Crocodile Leather Black |
| Clasp | Deployant Buckle |
| Movement | Manual Wind |
| Screw-down Crown | No |
| Crystal | Scratch Resistant Sapphire |
| Case Back | Transparent |
| Water Resistance | 30m/99ft |
| Diameter | 45.9mm |
| Case Thickness | 15.9mm |
The Lange 31 – with an amazing 31 day power reserve!One of the most challenging aspects in production of mechanical wristwatches is the duration of the Power Reserve, understandably the longer the Power Reserve the more convenient it is to the wearer. Thus most top brands invest considerable time, effort & funds into developing a mechanism that can store the most amount of energy within the constraints of a wristwatch case size. Storing energy is only half of the challenge, as the torque in the spring will fluctuate considerably (especially in watches with larger power reserves), which in turn will have a negative impact on accuracy. Thus an equally challenging feat is to take the stored energy and transfer it to the movement in a controlled and uniform manner.Enter the LANGE 31, Lange presents the world’s first mechanical wristwatch with a power reserve of 31 days and a patented constant-force escapement. The double stacked mainspring barrels, each with an impressive 185cm long spring, store the energy. A constant-force escapement between the twin mainspring barrels and the going-train assures that the balance receives an identical amount of energy every ten seconds, regardless of the state of wind of the springs!
Another practical feature is the “Key Winding Mechanism” where the watch is not wound by the crown (which would be an tedious job) , rather it is wound using a provided key that fits into a matching aperture on the case (sealed with 3 gaskets to ensure water resistance). The provided key has a built-in torque sensor, once the watch is almost fully wound the key senses the increase in tension & will disengage the ratchet key.
This watch features:
Solid polished finished platinum case with fine brushed edges.
Silver dial with applied index hour markers.
Polished hands.
Large double date window at the 10 o’clock position with a button on the case edge for quick date correction.
Small seconds hand sub-dial at the 6 o’clock position.
Power reserve indicator at the right side of the dial.
Movement:
Lange calibre L034.1.
Comprised of 406 components.
Contains 61 ruby jewels & 1 transparent sapphire jewel - total of 62 jewels.
Beats at 21,600 vph.
The movement has an impressive power reserve of 31 days (744 hours).
Three quarter plate with fine ribbing finish.
Blued screws.
This Watch has an alternate part number:
130025, 130025f, 130.025 f, 130.025f
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