Sustee Aquameter Green Pen Medium

SUSTEE AquaMeter :
Tired of not knowing when to water your plants? Anxious about overwatering? Introducing SUSTEE, an easy to use, award-winning, the aqua meter that tells you when to water your plants and when not to water your plants.
• White color indicates that the plant needs to be watered and blue indicates it has been watered - Each stick will last for approximately 6-9 months
• Has refillable core that allows for replacement cores to be inserted - Maintenance-free and no battery required
• Winner of multiple design awards & made with High-Quality Polycarbonate.
• Use in soils that retain water - suitable for indoor and outdoor plants 
• Made in Japan, in collaboration with Tokyo University of Agriculture & farmers to improve the design and function of each stick