Range: Uniaxial 4*90 degree / Biaxial 40 degree Resolving power: 0.1 degree Accuracy: Uniaxial 0.2 degree / Biaxial 0.3 degree Repeatability: 0.1 degree Power supply: 3.7V lithium battery Magnet: Magnet on top and bottom surfaces Wireless data transmission function: Pairing: When the tilt box is used with a receiving device that has Bluetooth (such as computer, cell phone, etc.) for the first time, pairing is required. Operation: Enable Bluetooth search on the receiving device while pressing and holding the wireless transmission key on the tilt box until the "on" indicator on the LCD begins to flash, indicating the device is in pairing mode. Release the key and wait for the receiving device to detect the device named K-XXXXXXxXxx, then select connect. After successful connection, the "on" indicator on the tilt box LCD remains lit. Data transmission (e.g., to mobile phones and computers): After connection is established, open the required software and keep the interface active. Press the wireless transmission key briefly to send data from the tilt box to the receiving device. Main display: 1. For uniaxial measurement, the main display shows X-axis data only 2. For biaxial measurement, the main display shows both X-axis and Y-axis data simultaneously Color: Black Material: Plastic Package Contents: 1 x Level Inclinometer Dual Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations in the color of the item as shown in the picture compared to the actual product. Measurement error allowance: +/- 1-3 cm.