RETN is a cryptocurrency built on the Ethereum platform using ERC20 protocol. RETN is a decentralised coin whose price depends on pure buy and sell by coin holders like yourself on exchanges. 

RETN is better than cash as it has the potential to grow in value exponentially even if it is lying idle in your wallet. 

RETN can be currently traded at exchanges like Bitpaction, IDEX, Etherdelta, and Forkdelta.