SKYWATCH Windmeter BL500 Hand-held weather station ideal for sailors, windsurfers, kitesurfers or fans of aviation. A small device collects data and transmits it via Bluetooth to your smartphone. The BL500 measures wind strength, temperature, humidity, pressure and UV index. In addition, the application calculates the perceived temperature, dew point, altitude (taken from the GPS), QNH (sea level pressure). The device is perfect for water sports lovers. It fits in every pocket, and thanks to its high resistance to external factors (IP67) it is perfect in wet or dusty places. What possibilities does SKYWATCH BT500 give you? Continuous measurement and recording of data Graphic representation of measurements - current, minimum, maximum and average values Tracking mode with GPS coordinates and measurements Possibility of sharing measurements and location via Facebook, Twitter, Instagram  History of own measurements Display of measurements on the map Application Android 4.4 or newer iOS 8.4 or newer Bluetooth v4.0 or newer Available languages: english and french Features Multidirectional propeller Retractable sensors protection Low interia of sensors Bluetooth connection and battery level indicators Rechargeable battery (MicroUSB) Pocket size: Ø26 x 116mm (closed, without clip) Anodized aluminium housing Weight: 66g (no clip) IP67 protection class Using temperature: -20 to +50°C Battery life: more than a week Swiss official calibration Accessories Wrist strap (included) Metal clip (included) Ball-head clamp (optional)