Observation: 1-3 (red part) means watering is needed, 4-7 (green part) means soil moisture is moderate, watering time can be adjusted according to , 8-10 (blue part) means wet and no watering is required. Suitable for plantations, gardens, indoor potted plants, etc. Only suitable for soil, do not use for liquids., Weight: 2.76018752024 Pounds, Manufacturer: Kueohse