Many watches claim to be packed with features, but few watches are designed to be portable weather stations. In addition to a clean digital display and sturdy, stainless steel construction, the ProTrek from Casion measures barometric pressure, temperature and compass heading. Solar charging technology means you’ll never have to change a battery again. Bracelet Dimensions: 8” long, 18mm wide Model No.: PRG270-1 Special Features: gray dial, black resin strap, alarm function, day and date display, stopwatch and chronograph functions, altimeter/barometer display, thermometer display, internal compass, solar charging technology, 10 ATM water resistance Number of Batteries: 1 Features: Stopwatch, Digital, Alarm, Chronograph, Multi-Function, Water Resistant, Quick Ship Jewelry Closure: Buckle Power Source: Ecodrive Watch Movement: Quartz Water Resistance: 100m Band Color: Black Dial Color: Gray Metal Color: Gray Case Thickness: 14.5mm Case Width: 52.5mm Band Content: Plastic Case Materials: 100% Stainless Steel Care: Wipe Clean Band Type: Strap Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.