Fangrui Product Details Advanced Bluetooth Connectivity: Seamlessly Pair This Handheld Anemometer With Your Ios Or Android Devices Via Bluetooth. Monitor And Analyze Wind Conditions Remotely, Optimizing Airflow In Hvac Systems And Ensuring Efficient Operation. Precise Wind Measurements Continuous Monitoring Data Export Versatile Functionality: Track Maximum, Minimum, And Average Wind Speeds. Durable Portable: Compact Design With A Protective Case And Hand Strap For Easy Transport. Colour:as Shown Material:plastic Package Contents: 1 X 866b-app Digital Anemometer 2 X 1.5v Aaa Batteries 1 X Lanyard 1 X Protective Cover Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.