Model: Xiaomi Watch S4, 41mm case (Model 66177)
Display: 1.43-inch AMOLED, 466x466 resolution
Strap: Fluororubber strap in Mint Green
Health & Fitness: Heart rate, SpO₂, sleep tracking, 100+ workout modes
Battery: 490 mAh, up to 15 days battery life
Features: 5 ATM water resistance, built-in GPS, NFC for payments