Detail:  

• This circuit is the running light circuit.
• The shape is the same to sandglass.
• This circuit is consist of 22 LEDs. 
• Adjustable running speed with potentiometer.
• Idea as light shows for model construction etc. 
• Operating voltage : 9 - 12 VDC. 
• Current consumption about 80 mA. 
• Recommended housing : FB04
• PCB dimensions : 2.7" X 4.3"