WFPSM-02c This tactical WEATHERmeter allows shooters to capture a complete on-site atmospheric profile including wind speed wind direction temperature pressure relative humidity and *density altitude. It integrates seamlessly with ballistics calculator apps like BallisticsARC to provide long-range shooters with a complete atmospheric profile. Bluetooth Smart (BLE) technology allows this weather meter to pair instantly to your mobile device for quick in-field sampling. Full Details *Available in compatible ballistics apps