Riddle

I am a mini solar powered computer. What am I?

Choose an answer

A.Smartphone
B.Radio
C.Watch
D.Calculator
Hint: It's a word with 10 letters, starting with "C".

Answer

Calculator

Why this is the answer

Many basic calculators run on small solar panels, making them tiny sun-powered computers.

This riddle is filed under "What Am I?" Riddles and rated Easy.