WHATS SUSTEE? What is Susteae? Sustea will notify you when watering with a change of color. No one can easily use the batteries just by inserting the batteries. Instead, you know. Color changing reminds you when water □When the soil is dry, the display will become white. ■ It will become blue when you fill it with water. Usable soil: Soils that can hold water to some extent such as moth moss, hydroculture, gardening soil, bark, copiate, peat moss, vermiculite, etc. Compatible Plants: Plants that can be grown with the above usable soil. Please note: Use with succulent plants during dormancy period may change shape with growth. If used on extremely fine soil or sand, the susty may not be able to absorb water and it may not work. ■Product color: white, green ■Operating temperature range: 5°C - 40°C - Operating humidity range: 20% - 80% ■Size: W 0.4 x D 0.3 x H 7.1 inches (10 x 8 x 180 mm) ■ Material quality: polycarbonate (main unit), preservative treated non-woven fabric (refill) ■ Estimated replacement: about 1 year