Garmin Instinct 2 ( Standard / Surf Edition / Camo Edition )

General LENS MATERIAL chemically strengthened glass BEZEL MATERIAL fiber-reinforced polymer CASE MATERIAL fiber-reinforced polymer QUICKFIT™ WATCH BAND COMPATIBLE yes (22 mm) STRAP MATERIAL silicone PHYSICAL SIZE 45 x 45 x 14.5 mm Fits wrists with a circumference of 135-230 mm DISPLAY SIZE custom, two-window design; 0.9” x 0.9” (23 x 23 mm) DISPLAY RESOLUTION 176 x 176 pixels DISPLAY TYPE monochrome, sunlight-visible, transflective memory-in-pixel (MIP) WEIGHT 52 g BATTERY LIFE Smartwatch: Up to 28 days Battery Saver Watch Mode: Up to 65 days GPS: Up to 30 hours Max Battery GPS Mode: Up to 70 hours Expedition GPS Activity: Up to 32 days WATER RATING 10 ATM MEMORY/HISTORY 32 MB Clock Features TIME/DATE GPS TIME SYNC AUTOMATIC DAYLIGHT SAVING TIME ALARM CLOCK TIMER STOPWATCH SUNRISE/SUNSET TIMES Health Monitoring WRIST-BASED HEART RATE (CONSTANT, EVERY SECOND) DAILY RESTING HEART RATE ABNORMAL HEART RATE ALERTS yes (high and low) RESPIRATION RATE (24X7) PULSE OX BLOOD OXYGEN SATURATION yes (spot-check, during sleep, all day) FITNESS AGE BODY BATTERY™ ENERGY MONITOR ALL-DAY STRESS RELAXATION BREATHING TIMER SLEEP SLEEP SCORE AND INSIGHTS HYDRATION yes (in Garmin Connect™) WOMEN'S HEALTH yes (in Garmin Connect™) HEALTH SNAPSHOT Sensors GPS GLONASS GALILEO GARMIN ELEVATE™ WRIST HEART RATE MONITOR BAROMETRIC ALTIMETER COMPASS ACCELEROMETER THERMOMETER PULSE OX BLOOD OXYGEN SATURATION MONITOR Daily Smart Features CONNECTIVITY Bluetooth®, ANT+® CONNECT IQ™ (DOWNLOADABLE WATCH FACES, DATA FIELDS, WIDGETS AND APPS) SMART NOTIFICATIONS TEXT RESPONSE/REJECT PHONE CALL WITH TEXT (ANDROID™ ONLY) CALENDAR WEATHER REALTIME SETTINGS SYNC WITH GARMIN CONNECT™ MOBILE BATTERY SAVER (CUSTOMIZABLE LOW POWER WATCH) CONTROLS SMARTPHONE MUSIC FIND MY PHONE FIND MY WATCH VIRB® REMOTE SMARTPHONE COMPATIBILITY iPhone®, Android™ PAIRS WITH GARMIN GOLF APP PAIRS WITH GARMIN CONNECT™ MOBILE Safety and Tracking Features LIVETRACK INCIDENT DETECTION DURING SELECT ACTIVITIES ASSISTANCE