Universal, the headphone compartment of the Redmi Bluetooth headset is universal and can be used interchangeably, as long as the headset can be reset.
< br >
The first generation and the second generation of wired charging bin and the second generation of wireless charging bin are universal, if the headset is placed inside can not be paired, you need to get the after-sales treatment can be used.
The first and second generation of redmi air dots are different in size, the second generation is 7.9 inches, and the previous one is 6.8 inches. The second generation has a larger screen and a faster refresh rate than its predecessor.