Sustee Aquameter Green - Small Pen

Tired of not knowing when to water your plants? Anxious about over watering? Introducing Sustee, an easy to use, award winning, aqua meter that tells you when to water your plants and when not to water your plants. It will Change color from White to Blue within 20 to 30 minutes after watering. Blue indicates enough water and White will indicate that the plant needs water. This is suitable for pot sizes: 9-6 cm (width) Made in Japan