The magic of hi-tech swimsuits failed to transform Hong Kong's swimmers into world beaters yesterday. The Hong Kong International Open Championships at Kowloon Park produced only one record - a far cry from the world-record breaking spree at the world championships in Rome last month. Hong Kong head coach Chan Yiu-hoi said it took time to get used to the new outfit. 'If you have been driving a 1,500cc car for a long time, and you are suddenly behind the wheel of a Ferrari, you won't be able to handle it overnight,' Chan said. Many of Hong Kong's leading swimmers squeezed themselves into the soon-to-be-banned suits, but only Wong Chun-yan was able to put his name in the record books. The Hoi Tin swimmer, who wore a Jaked suit covering his whole body, set a record of 28.91 seconds in the 50-metre breaststroke. 'This is the first time I have used it,' said the 22-year-old student. 'The feeling is good as it reduces water resistance, but I would say a three-week training stint in China also helped as my endurance has improved a lot. I will use it again in the 100-metre breaststroke [today].' Veteran Sherry Tsai Hiu-wai, also wearing a Jaked suit for the first time, won the 50-metre backstroke in 29.29 seconds, outside her 29.02 record, but she set a personal best in the 50-metre freestyle when she came second in the final in 26.17 seconds. 'I think I need time to adjust to the new suit but it did give me a psychological edge,' said Tsai, who turned 26 on Friday. 'I will use it again [today], and hopefully I can get used to it before the East Asian Games in December, which will be my last event before I retire.'