Tom Cruise has promised to donate the sonogram (ultrasound) machine he has bought for his pregnant fiance Katie Holmes to a hospital when their child is born.

Cruise bought the $200,000 (GBP110,000) equipment so he can keep an eye on the couple's unborn baby.

But he insists it will go to a good home after Holmes gives birth next year (06).

He tells US talk show host Barbara Walters, "I'm going to donate it to a hospital when we are done."