Amazfit T-Rex 3 Outdoor Smart Watch, 48mm, AMOLED Display Offline Maps & Navigation, 6 Satellite Systems Dual Band GPS, 27 Days Battery Life, 170+ Sports Mode, 45m Freediving, for Android, iPhone ULTRA-BRIGHT AMOLED DISPLAY: With peak brightness of 2,000 nits, the Amazfit smart watch delivers easy reading of maps and workout data in any light. Night mode and Glove Mode enhance visibility for clear viewing DURABILITY FOR EXTREME CONDITIONS: This rugged smart watch, engineered with a 316L stainless steel bezel, withstands temperatures from -22°F to 158°F, and is water-resistant to 328 feet and can be used for freediving to a depth of 147 Feet EXTENDED BATTERY LIFE: The Amazfit T Rex 3 offers over 3 weeks of power with typical use or up to 180 hours in GPS mode, providing long-lasting performance for hiking trips or outdoor activities PRECISION NAVIGATION TOOLS: The smart watch for men and women provides free global maps with dual-band positioning. Six satellite systems offer fast, accurate GPS connections and precise turn-by-turn navigation EXPANSIVE FITNESS TRACKING: This fitness watch offers 170+ workout modes and AI-generated training plans, providing real-time updates to guide your fitness journey from hiking to surfing