Rugged smartwatch with 1.7" AMOLED display and Bluetooth calling

Smartwatch with 1.7″ AMOLED display

Round touchscreen watch with a stated resolution of 360 × 360 pixels, Bluetooth calls, compass, and replaceable strap. The product page lists FitCloudPro and smartphone-assisted GPS; SIM or Wi‑Fi are not supported.

Specifications and compatibility

• The battery is listed as both over 450 mAh and 1,100 mAh. Battery life is stated as 15–20 days of use and up to 120 days on standby; confirm these values with the seller.
• Water resistance is inconsistently described as 5 ATM, IP68, and waterproof up to 10 meters. Do not use for swimming or diving until the model’s rating is documented.
• Stated compatibility: Android 5.1 or later and iOS 9.0 or later. Notifications and some features require an app, permissions, and a phone connection; check their availability in your market.
• The seller uses “T‑Rex 3 Pro” in the title but identifies the product as GUHUAVMI HT33, with FitCloudPro and different specifications. Authenticity or affiliation with Amazfit is not confirmed: ask for proof of the model, warranty, and support before purchasing.

Heart rate, oxygen, and sleep data are wellness indicators and are not a substitute for medical devices or professional assessments.

The stated package includes the watch, a magnetic charging cable, and a manual. The strap and finish depend on the variant.