Question about Xiaomi 13

Yes it is the EU Global version and everything is included, also band 20 and of course 5G works, it is also IP68 protected against water and dust.

These bands are supported:

5G: Supports NSA + SA
5G: n1/n3/n5/n7/n8/n20/n28/n38/n40/n41/n66/n71/n75/n77/n78
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28/32/66
4G: LTE TDD: B38/39/40/41/42/48
3G: WCDMA: B1/2/4/5/6/8/19
2G: GSM: 850, 900, 1,800, 1,900 MHz
Supports 4x4 MIMO