High precision measurement: Provides ultra-accurate readings with full coverage of 4×90°, enabling measurement of absolute or relative angles and inclinations in any situation. Display: Equipped with a large, clear LED display for real-time data visibility, even in daylight—improves efficiency for indoor and outdoor work under various lighting conditions. Powerful magnetic base: Magnetic design on all four sides for secure attachment to metal surfaces—enables hands-free use and multi-angle alignment without slipping or shifting. USB rechargeable and auto shut-off: Built-in rechargeable battery with USB charging—includes data hold function and auto shut-off after three minutes to extend battery life and support on-site use. Durable and user-friendly design: Rugged outer shell resistant to impact and daily wear—simple operation with intuitive buttons: short press to turn on, long press to turn off, and ZERO button to reset the angle. Specifications: Color: Black Model: 4-Sided Magnetic Digital Inclinometer Accuracy: ±0.2° Dimensions: 60 × 60 × 30 mm Package contents: 1 × 4-sided magnetic digital inclinometer Functions: Angle and slope conversion, relative measurement, absolute measurement, arbitrary position reset, auto shut-off after 3 minutes, data hold, direct USB charging of lithium battery.