Oppowatchse also supports the intelligent interconnection with BYD auto, which can realize the function of NFC car key, that is, using watches instead of car keys to unlock, start and lock. This function needs to be opened and used through the mobile phone Huantai Health APP and the mobile phone BYD APP. Due to the limitation of Apple's mobile phone iOS system, BYD NFC car keys do not support opening when connecting with Apple's mobile phone.