adjective satellite (s)

• transmitting light; able to be seen through with clarity(adj.all)

  Example:
  Crystal clear skies.
  

  Synonym:
  crystalline, limpid, lucid, pellucid, transparent
  

  source: wordnet30
• (of language) transparently clear; easily understandable(adj.all)

  Example:
  A crystal clear explanation.
  

  Synonym:
  limpid, lucid, luculent, pellucid, perspicuous
  

  source: wordnet30