Batteries:

• 2x AA-cell 1V5, lithium or alkaline (alkaline lifespan: more than 2 years)  

Dial :

• diameter 15" with Hour/Minute or Hour/Minute/Second Hands

Housing:

• Aluminum, powder painted or stainless steel

Functionality:

• The clock adjusts autonomously by retrieving the time from publicly available time servers through internet access, similar to a compute