Huami launches the Amazfit GTR 2 smartwatch: Two editions with NFC, up to 38-day battery life, and blood oxygen detection from 999 yuan (US$147) - NotebookCheck.net News
Amazfit GTR 2 review - GSMArena.com tests
Metal Stainless Steel Strap For Xiaomi Huami Amazfit GTR 42mm 47mm Bracelet Wrist Band for Huami Amazfit GTR 2/3 Wristband Strap - Walmart.com
Replacement Band for Amazfit GTR and amazfit GTR 2 smart watch - Fitme