Observation: 1-3 (red part) indicates watering is needed, 4-7 (green part) indicates moderate soil moisture, watering time can be adjusted accordingly, 8-10 (blue part) indicates wet soil and no watering is required. Suitable for plantations, gardens, indoor potted plants, etc. For soil use only. Do not use in liquids. Tips: Do not insert the probe into hard soil. Do not leave the probe in the soil for extended periods. Clean the probe after each use to prevent rust. Color: Black & Green Material: ABS + Metal Size: 145 x 35 x 30 mm Package Contents: 10 x Soil Moisture Tester The package includes only the items listed above. Other products are not included. Note: Due to light reflection and differences in display screens, the color of the item in the image may slightly vary from the actual product. Measurement error allowance is +/- 1-3 cm.