On the final interview round held in July it was presented by the WIZZ AIR that the bond is 49 months. Maybe some of you who got the contract earlier had different conditions!
Just like there are two options for your TR. You can pay it yourself. The TR is about 11K but you have to pay also for all transportation and accommodation. On the other side there is on bond. However, if you pick the bond option which is 35K EUR, you will have to pay it back for 49 months. But....you can get 10K reduction if certain conditions are met!