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The two-piece, rectangular crystal hides the workings of the watch. They'll never know how it works.
The watch features user-settable tilt angle and easy time setting operation. The timekeeping rate is adjustable to permit regulation to within a few seconds a week. The two Nixie tubes are the widely available IN-17 type and are socketed for easy replacement in case of damage. These tubes have 0.4" (10mm) tall digits for easy reading in adverse conditions. Opening the case by unscrewing the three Phillips head screws on the rear and popping off the cover reveals the time setting buttons, the battery and the tubes. The battery lasts several months, and is available at any drugstore. For the hardcore code tweaker, a programming adapter allows the GPL’d PIC firmware running the watch to be hacked up at will. The source code will be available on this website as soon as it is written. The case is made of strong, lightweight aircraft aluminum, hard anodized for lasting beauty. The rear of the case is gently contoured for comfort in all-day use. An O-ring seal keeps out water, dust and dirt. The strap is a standard 20mm size, available at any fine jeweler. |
| Specifications | |
| Case size: | 40mm (1.6") tall by 55mm (2.2") wide by 30mm (1.2") thick, exclusive of strap lugs |
| Strap width: | 20mm between lugs |
| Weight: | 60g (2 oz) exclusive of strap |
| Case: | 6061-T6 aluminum, 1.6mm (0.06") thick |
| Color: | Black, hard anodized |
| Crystal: | Lexan, 1.6mm (0.06") thick |
| Battery type: | CR2 lithium disposable, 750mA-hour |
| Battery life: | Approximately 4-6 months at 50 viewings per day |
| Processor: | PIC16LF722, 8192 instructions per second |
| Cathode driver: | 4x TD62083AFN |
| Power controller: | LT1308B |
| Tilt sensor: | ADXL335 |