The present invention relates generally to the field of wearable devices and transaction banking, and more particularly to a smart wearable ring based wireless transaction system and method thereof which has capability to works at both point of sale (PoS or POS or Pos) system and/or at automated teller machine (ATM) centers for our purchases as well as for ATM transactions. Accordingly, an aspect of the present invention is to a smart ring having one or more inner rings, wherein each ring is utilized to set pin on the ring to enable the RFID chip which is embedded in the ring to initiate/perform at least one transaction.