• Adopt super-accuracy sensor from Swiss.
• Altitude total gain/loss, 24 hours altitude record and chart.
• Max/min altitude, temperature, huminity record.
• 24 hours air pressure trend chart.
• Incorporates altimeter, barometer, compass functions, etc.
• This compass is reliable and accurate. Durable, it is an essential navigation tool for all outdoor activities. It can be used in any conditions. It is shockproof, waterproof, damage-resistant and sand-proof, and can operate smoothly in any environment