
Ski jumper Choi Heung-chul, from left, golfer Lee Sang-hee, sprinter Kim Kuk-young and golfer Han Jung-eun pose with Halo Sport athletic headphones during the product’s Korea launch event at Lotte Hotel in Seoul, Tuesday. The headsets, manufactured by U.S.-based Halo Neuroscience, stimulate the brain’s motor cortex to improve athletic performance. / Courtesy of Halo Sport