BOTAO 2 in 1 handheld anemometer to measure air conditioning outdoor wind speed temperature volume tester instrument sensing high precision 5 wind speeds, battery: 3vcr2032 (not included) Shipment Quantity: 1 Piece Package Contents: Only the above package contents, excluding other products. Size: 42*20*108mm (Reminder: The size is measured by hand, please allow 1-2 cm measurement error) Color: orange (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.) When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it