A: qcymelobudsanc uses a synchronous boost chip. MeloBuds ANC noise reduction small sugar cube is the latest product launched by QCY Image recently, focusing on cost-effective noise reduction experience. Its appearance design is inspired by xylitol chewing gum. The charging box has rounded and natural lines, and the shell is delicate and skin-friendly. The earphones are handle-shaped in-ear design and support touch operation.