Franky Zapata's water-jet Flyboards have become popular with the likes of Justin Bieber and Kylie Jenner.

But the French jet ski champion claims to have a new invention that, if it works, could put Marty McFly's hoverboard to shame.

Dubbed the FlyBoard Air, the device ditches water jets for what appears to be a jet turbine engine - but not everyone is convinced.

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Dubbed the FlyBoard Air, the device ditches water jets for what appears to be a jet turbine engine - but the device has it sceptics. It claims to allow users to fly untethered through the sky to an incredible height of 10,000 feet. That's equal to the height of nearly seven Empire State buildings stacked on top of each other

FLYBOARD AIR: KEY STATS The Flyboard Air claims to allow users to fly untethered through the sky to an incredible height of 10,000 feet. That's equal to the height of nearly seven Empire State buildings stacked on top of each other The device uses an 'Independent Propulsion Unit' to fly for about 10 minute and has a top speed of 93mph (150 km/h). However, there are

o details on how Zapata controls the Flyboard, leading many to doubt the design. Advertisement

The Flyboard Air claims to allow users to fly untethered through the sky to an incredible height of 10,000 feet.

That's equal to the height of nearly seven Empire State buildings stacked on top of each other.

Over the weekend, Zapata released the first footage showing his new Flyboard Air in action.

The device uses an 'Independent Propulsion Unit' to fly for about 10 minute and has a top speed of 93mph (150 km/h), Zapata Racing claims.

In the video Zapata reaches a height 30 meters (98ft) above the ground, hitting a top speed of 34mph with a flight time of 3 minutes 55 seconds.

However, The Verge points out that the video doesn't show exactly how he takes off.

There are also no specific details on how Zapata is controlling the Flyboard or what exactly is powering it.

The video, however, does show a joystick that appears to be wired to the base of the device.

There is no word on when the Flyboard Air will be available for purchase, or if it will ever be released to the public.

The device uses an 'Independent Propulsion Unit' to fly for about 10 minute and has a top speed of 93mph (150 km/h). However, there are no details on how Zapata controls the Flyboard, leading many to doubt the design. Pictured if Franky Zapata during his test run of the device. It is unknown where the test took place

And the system has its sceptics.

Yoni Heisler writing in BGR.com says: 'The video is undoubtedly incredible, but sad to say that there's no way that this can be real, right?'

'I mean, the laws of physics simply won’t allow it.'

In a comment accompanying the video, Zapata Racing writes: 'The Independent Propulsion Unit represents 4 years of hard work for a result exceeding all records.

'Although the UFO is still in prototype phase and won't be on the market in 2016, it has exactly the same behavior as the WFD Flyboard Pro Series.'

Zapata has yet to respond to DailyMail.com to comment on the device.

Franky Zapata amazed the world in 2011 with the release of his Flyboard, which uses a water jetpack to propel users into the air.

In a comment accompanying the video, Zapata Racing writes: 'The Independent Propulsion Unit represents 4 years of hard work for a result exceeding all records. 'Although the UFO is still in prototype phase and won't be on the market in 2016, it has exactly the same behavior as the WFD Flyboard Pro Series'

The video shows a joystick that appears to be wired to the base of the device. Zapata Racing, however, has not released specific details about how the device is controlled

This latest $2,675 (£1,577) version features a skateboard-shaped craft that will enable the rider to perform tricks, including somersaults and spins.

The device can get up to 16mph as it 'surfs' in mid-air.

Zapata isn't the only one trying to create Back to the Future-style hoverboards.

Last year, Canadian inventor Alexandru Duru set the world record for longest continuous flight on his custom-built hoverboard.

Gliding 275.9m (905ft 2in), or the length of two football fields, across the surface of Lake Ouareau in Quebec, Duru earned himself a spot in the Guinness Book of World Records.

During the video Duru can be seen hovering around 16ft above the surface of the lake, which is much higher than Marty ever achieved in the film franchise.

Zapata's latest device went to almost twice that height, but it remains to be seen how it really works.

In the video Zapata reaches a height 30 meters (98ft) above the ground, hitting a top speed of 34mph with a flight time of 3 minutes 55 seconds. Pictured is Franky Zapata before his test flight

Tyga and Kylie Jenner were spotted using an early version of the Flyboard in St Barts last year