Sustee Aquameter Set of 2, Plant Moisture Sensor, (White, Large, Refillable)

Dimensions: 10.04 x 0.39 x 0.31 inches (large) - Intended for pot sizes of 6 - 12. 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 two refillable sustee watering sticks (white) - Moisture meter for house plants that has refillable replacement core - Each stick will last for approximately 6-9 months. Senses water at root level, no dirty fingers & damaged roots trying to gauge soil moisture. Award-winning product design, environmentally friendly, and maintenance-free (no battery required). 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. Leave the device in the pot to continuously monitor soil humidity and show you when to water. Best used in soils that retain water. Sustee collaborated with Tokyo University of Agriculture to improve the design and function of each stick