Tag Archives: Hoptroff

Hoptroff Watches – Models with Technical Specifications, Price, Brand Details, History, News and Archives

Hoptroff No.16, the Atomic Wristwatch

Based in London, Hoptroff produces highly imaginative watches that incorporate both traditional and contemporary horology know how and techniques.

After the successful induction of Hoptroff No.10 Pocket Watch, the first atomic timepiece ever built, the brand now unveils an exceptional atomic wristwatch. The Hoptroff No.16, a logical progression from the No.10, boasts an “infinity” double dial design with reduced width and thickness.

The Art Nouveau dial of Hoptroff No.16 is aimed at collectors of classic watches, and incorporates 8 complications combined only on the rarest of timepieces.

The right dial design echoes the iconic Space Traveller by George Daniels, displaying equation of time and sidereal time in addition to normal time. The left dial additionally displays perpetual date, perpetual moon phase, sunrise, sunset, and power reserve. Two face figures bridge the dials, each with two blue sapphire eyes that glow once each minute.

The Hoptroff No.16 is the most accurate wristwatch in the world. In full atomic mode, it keeps time to 1½ seconds per thousand years. In low power mode, 1 second per hundred years. The No.16 is available in a limited edition of 100 pieces, in 950 Platinum, 18 kt Gold and tarnish-free Britannia Silver.

Hoptroff Ltd design and make watches in London and, very rarely for a watchmaker, this includes the movements that drive them. Their creations fuse vibrant imagination, classic design, mechanical dial-plates and advanced electronics to make timepieces beyond the reach of other watchmakers.

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.

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.

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