Prince Harry’s new black ring is an Oura activity tracker
Prince Harry has been spotted wearing a new black metallic ring on the royal tour, prompting widespread social media speculation over its origins.
The Duke of Sussex, known for wearing jewellery with sentimental meaning, has sported the chunky black band on his right ring finger on the first three days of outings in Australia.
Some fans questioned whether the sleek piece of jewellery was a gift from the Duchess of Sussex to mark their pregnancy announcement, others suggested it might be linked to the upcoming 2018 Sydney Invictus Games.
However it has now been revealed that the ring is in fact a state-of-the-art titanium sleep and activity tracker, described online as ‘the world’s most advanced wearable technology’.
The £275 (AUD $510) ring is from Finland-based company Oura Health, according to PEOPLE. It is available to buy in the US for $219.
It works by taking constant readings of body temperature, heart rate and movement and feeds back to a smartphone app that allows the wearer to see the results.
Prince Harry is wearing the titanium ring in the ‘Heritage’ design, one of two available on the website.
The prince owns a number of pieces of jewellery, including his platinum wedding band.
The Duke and Duchess of Sussex also gave one of the earliest indications of their relationship by wearing matching beaded blue bracelets.
Harry was not wearing the activity tracker at his last public outing before leaving for Australia – the wedding of his cousin Princess Eugenie last Friday.
Neither did he wear it when he joined Meghan on their first joint visit to Sussex on October 3.
The ring would help the prince keep track of his sleep following the long-haul flight to Australia and the busy schedule on their Australian and Pacific tour, when they will enter several different timezones.
Or it could be tracking his sleep pattern in preparation for the upcoming arrival of his first child.
Kensington Palace declined to comment on the ring when contacted by MailOnline.
The couple announced they were expecting their first child just hours after landing in Australia on Monday.
After a brief visit to Dubbo on Wednesday, the royal couple visited Melbourne on Thursday and will then fly back to Sydney and Fraser Island off the Queensland coast.
The second week of their trip will see the couple fly to Fiji, Tonga and New Zealand before flying back to the UK on October 31.