Finnish startup Jolla will deliver its first Sailfish OS devices at 7pm today at a launch event in Finland's capital Helsinki.

As Jolla announced earlier this month , Finnish mobile operator DNA is offering a batch of 450 Jolla phones for one evening at a pop-up store in central Helsinki to customers that have pre-ordered the device.

For the past two years, Jolla has been working towards the launch of its Linux-based Sailfish OS, which it hopes OEMs will license, and which will feature on its own 'Other Half' smartphone.

The device was made available for purchase at €399 (£337) through a pre-order campaign that Jolla launched in May and which was booked in July .