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: Only the top and bottom surface has the magnet Wireless data transmission function: Pairing: When the tilt box and the receiving device with Bluetooth (computer, cell phone, etc.) are used together for the first time, pairing is required. Open the Bluetooth search function on the receiving device, then long press the wireless transmission key on the tilt box until the "on" indicator on the LCD begins to flash, indicating the device is in search 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., mobile phones and computers): After connection is established, open the 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 Only the above package content; other items are not included. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.