enel92 | C51 Electronic Clock - YSZ-4 - ICStation.com @enel92 | Uploaded 10 years ago | Updated 2 hours ago
this watch is really very nice and accurate. great for those who like electronics.
I really enjoyed building it, packaging is included PCB circuit board and all components.
thanks to the microcontroller with a 12MHz external oscillator is very accurate! PCB draws its power from a USB port with the included cable.
also the alarm function is very useful! you can set 2 different alarms!
the shipping was fast. Icstation team is very friendly and helpful!

The watch is available here:
http://www.icstation.com/product_info.php?products_id=1765#.U6xaOfl_vYg

Description

AT89C2051-based of four electronic clock kit

Kit Model: YSZ-4
Supply voltage: 3V-6V
PCB Size: 52mm * wide 42mm

Function:

1. Seconds correction
2. Switch to every minute independent display interface
3. whole point of time
4. Two alarm settings

Kit Features:

A. 0.56 inch special red digital clock for display;
B. Import AT89C2051 for master chip;
C.1.2mm thick PCB made from military grade FR-4 board;
D. accurate travel time, travel time error range error -1 to +1 seconds every 24 hours.

This kit contains a USB to 3.5mm power cord, plug in the USB charger can be used.