
http://www.cathodecorner.com/nixiewatch/index.html
Specifications
Size: 55mm (2.2") diameter by 20mm (0.79") thick
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: Mineral glass, 45mm (1.8") diameter x 1.8mm (0.07") 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: 2x TD62083AFN
Power controller: LT1308B
Tilt sensor: ADXL335



https://www.youtube.com/watch?v=NvTOcL2zyN8