At his first press event of the year, Mandopop king Jay Chou admitted to feeling a little nervous being in front of so many cameras again.

"Thank god I haven't been drinking that much bubble tea recently," the 41-year-old Taiwanese singer said at a launch for watchmaker Tudor's new Royal collection of sport-chic watches in Taipei last Tuesday.

He said: "You can photoshop your own publicity photos but no one does that for you at a press event."

Chou, who is a Tudor ambassador, put in a 20-minute appearance at the event which was broadcast live to the press in Hong Kong, China and Singapore, taking only questions sent in advance.

The multi-hyphenate, who has directed music videos and his own films like Secret (2007), helmed an advertisement featuring himself for the brand.

He said: "I'm more casual with my own videos but this is the first time I'm doing something like this for an international brand so I'm more cautious. I want to satisfy the client, after all."

In the advertisement, he is seen acting out a fight scene and later sitting down to play the piano.

Filming it brought back old memories. "It reminded me of days filming (2011 Hollywood action comedy) The Green Hornet. I definitely tire more easily now, but I shouldn't be defeated by old age."

Chou, who wore a 41mm Tudor Royal watch with a blue dial, said he wants to continue doing action scenes. "I have 20 years left before I'm 60 so I'd better film fight scenes while I still can," he said with a laugh.

On his criteria for picking out timepieces, he said: "Firstly, price. I'm practical like that, but also how the watch looks. I like something bright but still elegant, something that goes with everything."

Asked how the brand's slogan Born To Dare resonates with him, he reflected on his career, which spans singing, acting, directing and hosting.

"I think you can say I'm a greedy person in the entertainment industry. I even want to host.

"Hosting J-Style Trip (Chou's Netflix travelogue series), for example, is a daring thing for me because it's a reality series which goes to so many places in the world where there are language barriers. I could only communicate with my music and my magic tricks."

Outside of his travel series, he has sometimes posted in English on his Instagram account. Chou, who is married to Taiwanese-Australian model Hannah Quinlivan and has two children with her, says: "I'm learning a bit but my wife helps to translate my posts too."