The Garmin Fenix 5X 010-01733-01 Sapphire - Gray Black watch is a Smatwatch GPS watch with Cardio Wrist and sapphire crystal: Garmin Elevate ™ technology to measure the heart rate on the wrist. Highly resistant sapphire crystal lens. EXO ™ antenna with GPS / GLONASS satellite reception. 1.2 "anti-glare Chroma ™ color screen (51mm case). Preloaded TopoActive Europe and Cycle Map Europe maps with turn-by-turn directions. Turn-by-turn navigation directions and POIs with Around Me function. Round-Trip Run functions, Round-Trip Ride, GroupTrack and LiveTrack. Preset or customizable sport profiles. New parameters for the analysis of TrainingLoad and TrainingStatus performance. Physiological metrics: Stress Score, Performance Condition and Anaerobic Threshold. Provides the estimate of VO2 max, recovery times and race times forecasting. Advanced running dynamics and trail running specific functions: AutoClimb. Compatible with HRM-Tri ™ and HRM-Swim ™ heart rate belts. Suitable for cycling and compatible with Vector®. Smart Notification1 and wireless connectivity. via Bluetooth® and Wi-Fi®. Supports third-party Bluetooth® sensors. Compatible with Garmin Connect ™ Mobile. Download apps, widgets and watch faces via Connect IQ ™. Quadra nti customizable via the Garmin Face It ™ app. Interchangeable straps with QuickFit ™ technology. Lens material: sapphire lens. Bezel material: stainless steel. Lining material: fiber reinforced polymer. QuickFit ™ watch band: yes (26mm). Strap material: silicone. Case dimensions, LxWxH: 51 x 51 x 17.5 mm. Weight: silicone strap: 98 g. Water resistance classification: 10 ATM. Battery: rechargeable lithium ion. Type of anti-glare screen, transflective MIP (Memory-In-Pixel). Screen size, WxH 30.4 mm (1.2 ") in diameter. Screen resolution, WxH 240 x 240 pixels. Battery life: Smart mode: up to 12 days. GPS / HR mode: up to 20 hours. UltraTrac mode ™: up to 35 hours without wrist heart rate Memory / history: 16 GB.