Sustee Aquameter, Set of 5, Plant Soil Moisture Sensor (Green, Medium)

Dimensions: 7.09 x 0.39 x 0.31 inches (medium) - Intended for pot sizes of 3.5, 4, 5, and 6. The Sustee Aquameter is a leave-in soil moisture sensor pen that can be left in the soil for continuous monitoring, unlike other moisture meters that need to be taken out after each measure. Set includes five refillable sustee watering sticks (green). Has refillable replacement core - Each stick will last for approximately 6-9 months. This soil aqua meter has plant water indicator that changes color depending on soil type - White indicates plant needs watering; blue indicates it's been watered. Keep your hands clean by visually monitoring when your plant needs water. Maintenance-free (no battery required). Award-winning product design - Made in Japan. Moisture meter for house plants. Sustee collaborated with Tokyo University of Agriculture to improve the design and function of each stick