click on the link with the arrow to see Peter talk about this strategy--he is one of the best people to explain things--he talks in a way that is easy to understand, sometimes he adds a little story and it is fun to hear about different strategies even if that is not your current pick.
copied from the cboe website:
Buy one 70 strike Call at $3.60
Sell one 75 strike Call at $2.00
Net Debit (cost) $1.60