Like any other entity, the sprint also has few PROPERTIES like:

• Timeboxing – Almost anything in a sprint is time-boxed, whether it is a ceremony or the sprint itself. Timeboxing allows the space for discipline and closed boundaries for any planned activity. It helps the team to focus, remember the good old days when the actual study would start the day exam dates are published?
• Following a fixed time box in development creates a cadence, it also helps in gathering metrics on STEADY intervals, for instance, we calculate the VELOCITY of the team every time box (Sprint).
• Protected from any changes – Scrum says, once the team has made a commitment in the Sprint Planning, the scope of the sprint will be locked. Any changes in the commitment in terms of scope change is not ENCOURAGED. But if the change is small enough to be incorporated in a sprint, the team should pull it up as Agile Manifesto also talks about ‘Responding to Change over Following a Plan’
• The maximum duration of a sprint should be a calendar MONTH.