From the manufacturer

Casio Pro Trek PRW-3500/3510 Key Features

Atomic Timekeeping

Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China)

Pro Trek Version 3 Triple Sensor

Sensors Include Altimeter, Barometer/Thermometer, and Digital Compass

Pro Trek Tough Solar Power

Integrated Solar Panel That Uses Sunlight and UV Light to Recharge the Watch’s Battery

Casio Pro Trek PRW-3500/3510 Additional Features

Water Resistant

200 Meter Water Resistant

Multi Alarm

5 Daily Alarms (4 one-time and 1 snooze alarm)

Stopwatch

1/10 Second Stopwatch Measuring capacity: 999:59'59.9" 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 minute to 24 hours (1-minute increments and 1-hour increments)

World Time

World Time 31 time zones (48 cities + UTC), city name display, daylight saving on/off

Casio Pro Trek PRW-3500/3510 Series

This new Triple Sensor Version 3 model delivers altitude, barometric pressure, and direction readings that are more accurate than previous models. A Barometric Pressure Tendency Alarm alerts the wearer to sudden changes in pressure readings, which can indicate upcoming weather events.

This model is water resistant up to 200 meters and features Full Auto LED display illumination, which makes it a great choice for wet environments and nighttime operations. A stainless steel rotary bezel can be positioned to help you keep track of your current and intended bearings.

*Model Shown May Not Be The Same as The Product Being Sold(For Informational Purposes Only)

	PAG240-1CR	PRW2500T-7CR	PRG270D-7CR	PRT-B50-1CR
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Customer Reviews	4.6 out of 5 stars 1,919	4.7 out of 5 stars 1,049	—	4.4 out of 5 stars 468
Price	—	—	—	$235.99$235.99
Solar Powered	✓	✓	✓
Atomic Timekeeping		✓
Triple Sensor	✓	✓	✓
Metal Band		✓	✓
Stopwatch	✓	✓	✓	✓
Countdown Timer	✓	✓	✓	✓
Sunset/Sunrise Data		✓	✓	✓
Tide/Moon Data	✓
Bluetooth Connected				✓
Quad Sensor				✓