Hoptroff No. 10 – The World’s First Atomic-Powered Pocket Watch

Hoptroff, the London-based manufacturer of extraordinary watch movements, has announced a quantum leap in luxury timepiece for connoisseurs. The Hoptroff No. 10 movement, which will be destined for the world’s first atomic-powered pocket watch. The result is a safe way to tell the time which is more accurate than any  luxury mechanical or quartz watch ever produced.

Containing a highly accurate atomic clock, this first-of-a-kind thoroughly modern timepiece is not to be confused with radio-receiving watches, which have existed for decades. The No.10 actually contains a caesium gas chamber inside a temperature controlled oven, a laser to excite the atoms and a microwave resonator to measure their atomic transitions in order to measure time.

Hoptroff No. 10 - The World’s First Atomic-Powered Pocket Watch

The No.10 watch has a self-contained accuracy of one and a half seconds per thousand years. The atomic physics package is supplied by Symmetricom, who originally developed it in collaboration with the US Department of Defence for use in cruise missiles and unmanned aerial vehicles where it is needed to continue navigating in the presence of GPS radio jamming.

The watch will have a formidable number of complications (Approximately 28 Functions!). The front dial is designed for marine navigation. With the aid only of a sextant, it can determine longitude to within a nautical mile, even after years at sea. The rear face is still under development. The company has   been developing the movement secretly under the code name Atom Heart Mother, after the Pink Floyd album.

Hoptroff No. 10 - The World’s First Atomic-Powered Pocket Watch

Measuring 82mm in diameter and 25mm thick, the watch is expected to be completed later this year. Only twelve examples are due to be manufactured initially, costing “well into five figures”.  Customers will also be subject to security clearances due to the nature of the device.

Special features

1. Symmetricom Chip Scale Atomic Clock
2. USB socket
3. 4 x pusher actuators
4. 9 x Soprod bimotors
5. 10 x Soprod monomotors
6. 6 x PIC microcontrollers
7. 60 x side-emitting LEDs
8. Flexipanel Bluetooth Low Energy radio
9. Sensirion humidity / temperature sensor
10. Measurement Specialties pressure sensor
11. Freescale magnetometer


1. Hours
2. Minutes
3. Seconds
4. Annual wheel
5. Magnetic compass
6. Longitude – coarse scale
7. Not shown due to patent applications
8. Day of week
9. Humidity
10. Date
11. Sidereal seconds
12. Power remaining
13. Tide forecast
14. Tide height
15. Temperature
16. Atmospheric pressure
17. Latitude – minutes
18. Latitude – degrees
19. Sidereal hours
20. Sidereal minutes
21. Longitude – minutes
22. Longitude – degrees
23. Microwave resonator status
24. Charge status
25. Atomic resonance lock indicator
26. Clock status – atomic / ACXO / TCXO
27. Caesium oven status
28. Laser status

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