The firmware for the Xiaomi Mi Smart Band 6 was discovered in the Zepp app (formerly Amazfit), which revealed the key upgrades over the current Band 5. As usual there are two versions – one for China (XMSH16HM, with NFC) and one for the global market (XMSH15HM, most likely without NFC). The new band will feature a built-in GPS receiver, which will provide accurate speed and distance data for your exercises (the screen is far too tiny for navigation). For faster positioning, the phone app will send A-GPS data to the band. The new band will feature an SpO2 (blood oxygen) sensor, just...
Source: https://www.gsmarena.com/leak_xiaomi_mi_band_6_will_have_a_gps_receiver_reworked_ui_smart_home_features_and_more-news-47385.php