Casio PRT-B70-1DR

• Double LED light
  LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
• Low-temperature resistant (–10°C/14°F)
• Mobile link (Wireless linking using Bluetooth®)
• Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
• Digital compass
  Measures and displays direction as one of 16 points
  Measuring range: 0 to 359°
  Measuring unit: 1°
  60 seconds continuous measurement
  Hand indication of north
  Magnetic declination correction
  Direction calibration (2-point calibration, figure eight calibration, auto calibration)
• Altimeter
  Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
  Measuring unit: 1 m (5 ft.)
  Hand indication graph of altitude differential
  Others: Relative altitude readings (±100 m /±1000 m), Selectable measurement interval: 5 seconds or 2 minutes (1 second for first 3 minutes only)
  *Changeover between meters (m) and feet (ft)
• Barometer
  Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
  Measuring unit: 1 hPa (0.05 inHg)
  Hand indication of pressure differential (±10hPa)
  Atmospheric pressure tendency graph (last 20 hours or last 56 hours)
  Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
  The atmospheric pressure tendency graph can show the last 20 minutes or last 56 minutes of measurements. The hand indication of pressure differential shows values in units of ±1 hPa.
  *Changeover between hPa and inHg
• Thermometer
  Measuring range: –10 to 60°C (14 to 140°F)
  Measuring unit: 0.1°C (0.2°F)
  *Changeover between Celsius (°C) and Fahrenheit (°F)
• World time
  38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
• Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range
  Power Saving: Auto sensor sleep state entry after fixed period of non-activity
• Sunrise, sunset time display
  Sunrise time and sunset time for specific date
• Moon data (moon age of the specific date)
• Tide graph
• Fishing timer
• 1/100-second stopwatch
  00’00”00～59’59”99 (for the first 60 minutes)
  1:00’00～23:59’59 (after 60 minutes)
  Measuring unit:
  1/100 second (for the first 60 minutes)
  1 second (after 60 minutes)
  Measuring modes: Elapsed time, split time, 1st-2nd place times
• Countdown timer
  Measuring unit: 1 second
  Countdown range: 24 hours
  Countdown start time setting range: 1 second to 24 hours (1-minute increments and 1-hour increments)
• 5 daily alarms
• Hourly time signal
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Button operation tone on/off
• Regular timekeeping:
  Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
  Digital: Hour, minute, second, am/pm, month, date, day
• Accuracy: ±15 seconds per month (with no signal calibration)
• Approx. battery life: 2 years on CR2025

Size of case / Total weight

• Size of case: 57.5×50.8×16.8mm
• Total weight: 73g