Sustee Medium Refillable Insert Aqua Meter (White) with Core Installed + 2 Additional Medium Cores - Plant Moisture Sensor For Potted Plants

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 one white Sustee watering stick with core installed and two additional replacement core inserts (three cores total). Materials: polycarbonate (main body), nonwoven fabric treated with preservatives (refill) - Made in Japan. 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. 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 - Leave the device in the pot to continuously monitor soil humidity and show you when to water. Suits all plants and best used in soils that retain water. Maintenance-free (no battery required). Sustee collaborated with Tokyo University of Agriculture to improve the design and function of each stick