What are the differences between the Xiaomi Smart Band 9 Standard and the NFC version?

For your reference, the differences between them are as follows:
1. The Xiaomi Smart Band 9 NFC version adds an NFC chip compared to the Xiaomi Smart Band 9, enabling it to swipe public transit cards and simulate access cards. It supports simulating door cards with unencrypted frequencies of 13.56MHz (IC cards) available on the market. However, cards with encrypted areas can only copy the card number and cannot guarantee full functionality for card swiping. Due to security reasons, bank cards with access card functions and cards used for stored value or public transit cannot be simulated temporarily. Even if successfully simulated, this feature cannot provide additional functions such as banking, financial transactions, or public transit;
Note:
Due to different mechanisms and standards for access card authentication in the market and varying card permissions managed by property management, successful simulation of a card does not guarantee its normal use. Some access cards and systems are not designed according to NFC standards, which can result in successful simulation but unsuccessful card swiping. If multiple attempts to swipe fail, using a physical access card is recommended.
2. The Xiaomi Smart Band 9 features a metal buckle with a CD pattern, whereas the Xiaomi Smart Band 9 NFC features a metal buckle with a matte finish;
3. The Xiaomi Smart Band 9 NFC features an additional microphone hole compared to the Xiaomi Smart Band 9.