The OnePlus 2 teasers continue as the Chinese company has offered an early look at the handset, Digital Spy reveals.

An "engineer test unit" of the device has appeared in a promotional poster for a photography competition the firm is running.

The winner of the contest will be ferried off to the OnePlus 2 launch ceremony in Hong Kong later this year.

Little can be gleamed from the promotional unit, but as this is a tester unit, its design may change by the time the phone arrives on the market.

The OnePlus One earned critical acclaim for combining cutting-edge specs with a budget price tag, although the hardware can no longer be considered top of the line.

The OnePlus 2 is expected to take the same approach, offering a Qualcomm Snapdragon 810 processor and 3GB of RAM for around $410.