The updated looks and size of the Casio Protrek Smart WSD-F30 will make a big difference, in my opinion. I believe that the WSD-F10 and WSD-F20 were both 56.4mm wide, by 61.7mm long, and 15.7mm thick, but we will note that while large for many wrists and compared to many watches the wearability was aided greatly by its plasticky lightness. Description. Go adventuring with this Casio Pro Trek smart watch. It's military-tested for durability in rough environments, and it's waterproof to 50m to prevent water damage. The GPS mode of this Casio Pro Trek smart watch will keep you on track, and it's Bluetooth-capable and compatible with both Android and iOS. Introduction Attention WSD-F10 Owners! This manual describes operations for a WSD-F10 watch that has been updated to Android Wear TM 2.0. For information about updating to Android Android Wear, Casio, Casio Smartwatch, smartwatch, Vasio Pro Trek Smart WSD-F20, Watch Review. Big Watch Book. We took Casio's ultra-tough smartwatch to the desert for some thorough testing. Casio WSD-F20 PRO TREK Smart vs Pebble Time Round vs Samsung Gear S3 Frontier comparison on basis of features design display battery, reviews & ratings and much more with full phone specifications at Gadgets Now (Casio Pro Trek Smart WSD-F20) Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life. DOVER, NJ, April 21, 2017 – Casio America, Inc. announced today the global launch of its new PRO TREK Smart Outdoor Watch ().First unveiled in January at CES 2017, the WSD-F20 is powered by Android Wear 2.0 and is optimal for the outdoors, boasting GPS capabilities, full color map display, offline map usage functionality, water resistance up to 50 meters, and tested to military standard Casio WSD-F20 PRO TREK Smart vs Fossil Q Marshal vs Mito S500 comparison on basis of features design display battery, reviews & ratings and much more with full phone specifications at Gadgets Now Edition A bulky smartwatch ready to take a lickin' for your adventurous waysFull write up at: Casio WSD-F20 PRO TREK Smart vs Fossil Gen 5 comparison on basis of features design display battery, reviews & ratings and much more with full phone specifications at Gadgets Now VnAO9.