PEOPLE has now confirmed that Harry is wearing the Oura Ring - a sleep and activity tracked that identifies various stages of sleep and connects to an app on your smartphone that shares your data.
The titanium ring comes in two different styles and four colours. Harry is wearing the Heritage style in black, which retails for $299.
The ring, which won the coveted Red Dot Award for its design, is perfect for Harry as he embarks on his huge Australian tour.