Microphone (water resistant) Vibration Bluetooth: Bluetooth V4.1 (Low Energy support) Wi-Fi: IEEE802.11 b/g/n Memory & storage: 512 MB RAM, 4 GB internal storage Auto Time Correction: By communication with smartphone (Time can be adjusted manually.) Time zones (world time function): Supports multiple world time zones (Types depend on system time zones) Tool App (Compass, Altimeter, Barometer, Sunrise/Sunset, Tide Graph & Fishing Time, My Graph) Digital Compass Measuring range: 0 to 359 degrees Measuring unit: 1 degree 60 seconds continuous measurement Hand indication of North Magnetic declination calibration Bearing Memory Gradient Calibration Altimeter Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft) Measuring unit: 1m (5ft) Measurement Accuracy: within +/-75m (+/- 250ft) Measurement Interval: 1-second (shortest) Altitude Graph: Past 24 hours Manual altitude correction, Auto altitude correction using location information*2 *3 Barometer Display range: 260 to 1,100 hPa (7.6 to 32.5 inHg) Display unit: 1 hPa (0.1 inHg) Measurement Accuracy: within +/-3 hPa (within +/-0.1 inHg) Atmospheric pressure tendency graph: Past 24 hours Measurement Interval: 1-minute Tide & Fishing Tide Graph: Past 12 hours + next 12 hours Fishing Time: calculated according to curent location, moon hour angle and age) Sunrise/Sunset Data Sunrise and sunset times (current location sunrise/sunset) Sunrise and sunset directions (accuracy depends on compass) My Graph*4: Daily activity pattern: Stopped, walking, running, vehicle, Calories burned, Steps, Altitude (Highest altitude achieved that day), Workout time Activity app (Trekking, Fishing, Cycling, Paddle, Snow) Moment Setter app (Climbing, Trekking, Fishing and Cycling, Paddle, Snow notifications) Location memory app (Map screen, route screen, selectable map skin, map downloading (off-line maps), voice memo, landmark, revisit marks, history screen) Screen Brightness: 5 levels Watch faces: 3 favorites, more can be added Full auto-calendar: Auto switching by linking with smartphone 12/24-hour timekeeping Battery: Lithium-ion Watch Battery level indicator: interger value, 0 to 100% Approx. battery life: In normal use without GPS connectivity - More than 1 day, roughly (varies according to use) Timepiece Mode (timekeeping only) - More than 1 month, roughly (varies according to use) With GPS connectivity at 1-second intervals, up to 9 hours with accuracy priority (varies according to app use), up to 25 hours with battery priority With GPS connectivity at 6-minute intervals, up to 2 days with location tracking log saving on Recharging Time: Approx. 2 hours at room temperature