Appearance: roughly the same, but there are two details:
1. The NFC version of the home button on the dial is semi-elliptical, while the standard version is still round like the previous generation.
2. On the back of the dial, there is a small hole next to the charging point of the NFC version
Basic parameters: Only the main body’s net weight is different, and the others are the same.
Standard version: 11.9 g, NFC version: 12.1 g.
Features:
1. In the introduction of the official website, there is a very small line that says: The hardware upgrade is only the NFC version
2. There is no off-wrist locking function in the standard version!
3. Mobile payment NFC version support: swipe subway bus, bank card, access card, Alipay (standard version is also available)
4. Operation mode: NFC version supports Xiaoai voice smart home control.
The other difference is of course the price ~ CNY229 for the official NFC version and CNY189 for the standard version.
Molly A 
Vivian Wu