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SKYWATCH Windmeter BL300 for smartphone - anemometer, thermometer, hygrometer
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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.

Model Wind Temperature Humidity Pressure UV Index
Skywatch BL300
Skywatch BL400
Skywatch BL500

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 or
  • History of own measurements
  • Display of measurements on the map


  • Android 4.4 or newer
  • iOS 8.4 or newer
  • Bluetooth v4.0 or newer. Use the standard ESP and ESS
  • App available here - ANDROID | iOS
  • Available languages: english and french


  • 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


  • Wrist strap (included)
  • Metal clip (included)
  • Ball-head clamp (optional)


For instant answer - open the chat and ask your question. We're active 9.00-17.00 CET.

Is it afterhours? ​No problem - leave us a message and we’ll respond early the next day.

​+48 513 020 570

For those who prefer phone calls - that's our number. You can give us a ring between 9.00-17.00 CET.

Parameter Minimal value Max value Precision Resolution Units
Wind 3km/h 150km/h ± 3% ± 0.1km/h km/h, m/s, fps, mph, knots, Bft
Temperature -25°C 60°C ± -0.3°C ± 0.1°C °C, °F
Humidity 0%HR 100%HR ± 3%HR in range 10-90 %HR ± 0.1%HR %HR
Pressure 300hPa 1200hPa ± 0.2hPa ± 0.1hPa hPa, mbar, inHg
UV Index 0 15 ± 1 ± 1 UV
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