Casio Protrek - WSD-F20-BK
GPS
Compatible (including GLONASS and MICHIBIKI (QZSS))
Color Maps
Compatible (supports offline use)
OS
Wear OS by Google
Display
1.32-inch, dual layer display
Color TFT LCD (320 × 300 pixels) and monochrome LCD
Touchscreen
Capacitive touchscreen (anti-fouling coating)
Water Resistance
5 bar (50 meters)*1
Environmental Durability
MIL-STD-810G (United States military standard issued by the U.S. Department of Defense),*2
low-temperature resistance (-10 °C)
Sensors
Optical sensor (heart rate), compass (magnetic) sensor, pressure (air pressure, altitude) sensor, accelerometer, gyrometer
Heart Rate Measurement
Microphone
Vibrator
Battery
Lithium-ion battery
Wireless Connectivity
Bluetooth® V4.2 (Low Energy) Wi-Fi (IEEE 802.11 b/g/n)
Buttons
MAP button, Power button, APP button
Charging Method
Magnetic charging terminal
Recharging Time
Approx. 2.5 hours at room temperature
Battery Life
(When GPS Not in Use)
Normal use (Color display auto OFF*3)：Up to 1.5 days
Multi-Timepiece mode (timekeeping and sensors only)：Up to 1 month
Battery Life
(Using GPS (activity))
Running/trail running (using heart rate measurement):Up to 20 hours*3 *5
Size of Case
Approx. 61.7 × 57.7 × 16.8 mm (H × W × D)
Weight
Approx. 81 g (including wristband)
