Gland – Michael Schumacher’s manager says the seven-time Formula One champion is still improving, almost 17 months after suffering severe head injuries in a skiing accident.

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Sabine Kehm says in a video interview: “We are happy to say still he does improvement and I say this always considering the severeness of the injury he had.”

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She adds: “But of course it will take a very long time for everybody involved to fight, and we are happy to take this fight.”

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The interview was released in Friday in a promotion for a sponsor.

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 A watch which Schumacher helped design was presented at an event this week near his home where he is recovering.

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Schumacher won a record seven Formula One titles and 91 races.

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He was injured when skiing during a French Alps vacation.