Calypso Marine Instruments - Ultrasonic Portable Anemometer
This self powered Bluetooth 4.1 ultrasonic windmeter stays on for 29 days in normal mode, and up to 1 year in standby without sun/charge.
Built with ultrasonic sensors, it will provide you with the most accurate results from an anemometer, as the Ultrasonic allows a continuous measurement of wind speed and direction.
Use for Coaching, Racing or Cruising