General description This product includes 100 pieces of soil moisture meters, each measuring 20cm in length. These moisture level indicators are designed for easy and convenient use without the need for batteries or electricity. Simply plug and play to monitor the water levels in your plants. Technical specifications Quantity: 100 pieces Length: 20 cm Color: White Material: Plastic Measurement error: +/- 1-3 cm Usage Ideal for monitoring water levels in flower pots. Suitable for both indoor and outdoor use. The buoy will sink to the bottom when there is no water and float when the correct amount of water is present. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.