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 located on top and bottom surfaces Wireless data transmission function: Pairing: When the tilt box is used with a Bluetooth-enabled receiving device (computer, cell phone, etc.) for the first time, pairing is required. To pair, enable Bluetooth search on the receiving device and long-press the wireless transmission key on the tilt box until the "on" indicator on the LCD begins to flash. This indicates 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 steady. Data transmission (e.g., to mobile phones and computers): After connection is established, open the required software and keep the interface active. Briefly press the wireless transmission key to send data from the tilt box to the connected 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: Only the items listed above are included. Other products are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance: +/- 1-3 cm.