Casio PRO TREK Bluetooth Solar Watch – Black/Blue | PRJ-B001-1DRCasio PRO TREK Bluetooth Solar Watch – Black/Blue | PRJ-B001-1DR is a lightweight outdoor watch featuring Tough Solar charging, Bluetooth smartphone connectivity, a bio-based resin strap, and 100-meter water resistance. Designed for hiking, trekking, camping, travel, and everyday adventures. Casio PRO TREK Bluetooth Solar Watch – Black/Blue | PRJ-B001-1DR is built for outdoor enthusiasts who need reliable performance, modern connectivity, and exceptional comfort. Powered by Casio’s Tough Solar technology, the watch continuously recharges using sunlight and indoor lighting, minimizing battery replacement while ensuring dependable operation. Bluetooth connectivity pairs the watch with the CASIO WATCHES app, providing automatic time adjustment, world time synchronization, phone finder, easy watch settings, and the convenient Time & Place function for recording locations during your outdoor adventures. Featuring a lightweight bio-based resin case and band, the innovative Rotary Guard Bezel, and 100-meter water resistance, the PRJ-B001-1DR is designed to withstand demanding outdoor conditions while remaining comfortable enough for everyday wear. The black case with blue accents delivers a modern outdoor style suitable for hiking, trekking, camping, fishing, and travel. Tough Solar charging systemBluetooth smartphone connectivityCompatible with CASIO WATCHES appAutomatic time synchronizationTime & Place functionPhone FinderRotary Guard BezelBio-based resin case and strapMineral Glass100-meter water resistanceLow-temperature resistant (-10C)World Time (38 time zones)StopwatchCountdown Timer5 Daily AlarmsDouble LED Super IlluminatorLightweight 44 g designSpecificationDetailsBrandCasioSeriesPRO TREKModelPRJ-B001-1DRColorBlack / BlueProduct TypeOutdoor WatchDisplayAnalog-DigitalMovementTough Solar QuartzPower SourceTough SolarConnectivityBluetoothSmartphone AppCASIO WATCHESCase MaterialBio-based ResinBezel MaterialBio-based ResinGlassMineral GlassWater Resistance100 m (10 Bar)Low Temperature Resistance-10CWeight44 gCase Size50.3 46 13.6 mmCompatible Wrist Size145215 mmWorld Time38 Time ZonesStopwatch1/100-SecondCountdown Timer60 MinutesAlarm5 Daily AlarmsLED LightDouble LED Super IlluminatorCalendarFull Auto Calendar (to 2099)Phone FinderYesTime & PlaceYes