Brand: Casio • Manufacturer no.: PRT-B50-1ER • Manufacturer series: Pro Trek 51mm • Functions: 12-/24 time mode, 5 day alarm, Altimeter, Automatic calender, Barometer, Bluetooth, cold resistant, Compass, Hour, Minute, Pedometer, Phone Finder, Second, Stop function, Sunrise & sunset, Thermometer, Timer, Worldtimer • Movement: Battery (quartz) • Dial color: Black • Display: Analog, Digital • Water resistant: 10 • Bezel: bidirectional, Turnable • Surface finish: Matted • Case color: Black • Case material: Resin • Case thickness: 15 • Case shape: Round • Case width: 51 • Caseback: pressed, Stainless steel bottom • Gender: Mens • Glas: hardened, Mineral glass • Lighting: Illuminator • Style: Sporty • Strap material: Resin • Strap color: Black • Lug width: 23 • Clasp: Buckle clasp • Max wrist circumferences: 230 • Item weight: 0.07 • Scope of delivery: Box, Instruction, Packaging, Warranty documents"