Oppo has recently made new moves in the area of smart eco-products, and its headmaster of intelligent eco-products, jo jia tong, has made public a brand-new earplugging drawing of headphones that bodes well for the new product. It is known that this earpiece, which uses a unique beans configuration, gives a small and delicate feeling and is expected to be officially released in may。From the exposed sketches, the earpiece is very crafty in