What year did Sony Ericsson square dance speakers start to be manufactured? Is it good quality? Baidu

The production began in 2015, because 2015 is the square dance boom, Sony Ericsson seized the wind and began to produce square dance audio. The quality is quite good, because the Sony Ericsson Group is a high-tech enterprise group based on multimedia series products, focusing on Bluetooth headphones, LCD TVs, smart audio, Bluetooth audio, Karaoke entertainment equipment, cell phones, amplifiers and other vertical fields. So the quality is quite good.