Since you don't have a core you don't die if your in water. But the parts of you that are robot will malfunction and take a day to start working again. Of course it depends on how long you were in the water but the dm decides what happens.

You know the spell eldritch blast aka a laser beam. You can choose where it is shot out of.

As a cyborg your skin you have the ability to create a shield. You can choose where the shield comes from.

Once a day you can double jump or jump double your normal height.

Your ability scores each increase by 1.

Since your a human you age like one you'll like around 80-90 years 

Cyborgs are humans so they can be taller than average humans but they stay around normal human height. 5ft to 7ft.

Your base walking speed is 30 feet.

You can speak, read, and write Common and two extra languages of your choice.