Acer's smartphone business chief, ST Liew, said the vendor will debut wearable technology sometime next year and described the opportunity as "billions of dollars worth of industry." The prime hurdle is discovering what appeals to consumers. "I think the trick is making the right trade-off, so that you put the right package of what people are expecting into a wearable. Is a day battery enough? It might be, if the charging mechanism is easy. You take off your watch at night, throw it on the side and it inductively charges," Liew said.