Specification:

Digital tube: 40.6mm x 16mm x 12mm
PCB Dimension: 35mm x 16mm
Power Supply: DC 7-30V
Time Mode: 24-hour
Display Color: Blue\/Green\/Red\/Yellow
Display: Four 0.40!#!amp!*!quot; LED digital tube
Refresh Rate: About 300mS
Time Setting: Single button， sliding scale
Power-Off: keep time for 2 years， but LED NOT Light.
Accuracy: 10ppm
Overload: 4 Times range
Operating Temperature: -40\u2103 - 85\u2103

Package included:

1x LED Time Clock