Fixed (Locked-In) :
- When you book your money transfer, you will see an exchange rate and it is fixed.
 - That means you know exactly how much money will be received by your relatives in India
 - There is no loss or gain due to change in exchange rate
 - Peace of mind
 
- When you book your transfer, the exchange rate that they show is only an indication of current rate. Your exact rate can be more or less
 - You don't know how much money will be delivered in India. This will be a problem if you have to send someone an exact amount.
 - If the exchange rate changes a lot in the time it takes to transfer your money (1 to 5 working days depending on the service you use), you will get significantly different amount than you expect.
 - Banks / services do not tell you at which point of time they did the conversion. So, there is a lot of scope for feeling cheated. For example, the bank can give you the lowest exchange rate during those 1 to 5 days and you can't do anything.
 - If you know that the rate is going to go up, you can use this method and get more money, if the service you are using is honest.
 - Not for faint of heart and not good for peace of mind.