The new Casio smartwatch is now part of the Pro Trek brand of outdoor watches under the Pro Trek Smart line and features an upgraded rugged exterior with button guards, a raised protective bezel, and Tool, Power, and App buttons. Designed for outdoor enthusiasts, the WSD-F20 includes custom apps for outdoor activities including trekking, cycling, fishing, paddling, and skiing. The WSD-F20 is also equipped with a pressure sensor (altimeter/barometer), compass, and accelerometer. The Tool app displays direction bearing, altitude measurement, atmospheric pressure measurement, and also provides sunrise/sunset data, full tide graphs, and an activity graph. 50-meter Water Resistance – MIL-STD-810 (tested for shock, vibration, humidity, solar radiation, low pressure transport, low pressure operation, high temperature transport, low temperature transport, temperature shock, ice accretion) – 1.32-inch Dual-Layer Display: color TFT 320×300 LCD and monochrome LCD – Capacitive touchscreen with anti-fouling coating – GPS including GLONASS (compatibility to be added soon) and Michibiki – Offline Color Maps – Sensors: Pressure (air pressure, altitude) sensor, accelerometer, gyrometer, compass sensor – Microphone – Vibrator – Bluetooth V4.1 (Low Energy) – Wi-Fi (IEEE 802.11 b/g/n) – TOOL button, Power button, APP button – Lithium-ion battery – Magnetic charging terminal – Recharging Time: About 2 hours at room temperature – Normal use battery life: approximately more than 1 day (will vary according to use) – Timepiece Mode (timekeeping only) battery life: approximately more than 1 month (will vary according to use) – Case Size: approximately 61.7 mm x 56.4 mm x 15.7 mm (HxWxD) – Weight: approximately 92 grams (with wrist bands) – Operating System: Android Wear 2.0 – Smartphone requirements: Android: Android 4.3 or later – iOS: iPhone 5 or later with iOS 9 or laterAndroid wear 2.0, gps, 5 bar water resistant, mil-standard 810 g durability, 0.8 mm thinner than 1st generation, 50m water resistant Digital compass, altimeter, barometer, activity tracker, dual layer lcd structure, original watch face, casio moment setter, microphone, timepiece mode ,Quartz Movement Case Diameter: 61.7mm , Water resistant to 50m (165ft: in general, suitable for short periods of recreational swimming, but not diving or snorkeling 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 , Recharging Time: Approx. 2 hours at room temperature