Dimensions: 7.09 x 0.39 x 0.31 inches (medium) - Intended for pot sizes of 3.5, 4, 5, and 6 Senses water at root level, no dirty fingers & damaged trying to gauge soil moisture. Moisture meter for house plants. Award-winning product design, environmentally friendly, and maintenance-free (no battery required) - Creates little waste Extend the life of your beloved houseplants with the Aquameter soil moisture meter for indoor and outdoor plants. is designed and Japan and is the perfect addition to houseplants. It has a slim, minimalist aesthetic that doesn't take away from the beauty of the plants, harmoniously blending in when left in the soil. It works with almost any plant that grows in the soil. When using the moisture testing stick, the white color indicates that the watering, and the blue color indicates that it has enough water. The core insert that determines if watering is needed can also be manually replaced. This leave in soil moisture meter is maintenance-free. A perfect plant watering indicator for potted plants. It is recommended to replace the refillable core of your after 6- of use. has multiple international awards including the Reddot Design Award, Germany Design for Asia Award, and the Japan Good Designs Award. The medium size is meant for pot sizes 3.5, 4, 5, and 6. Two sticks are included. Meet: is a modern, Japanese soil moisture sensor. The blue color indicates that there is enough water in the soil, and the while color indicate that plant is in need of watering. features a minimal aesthetic that doesn't take away from the beauty of your plants. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Dimensions: (Medium) - Intended for pot sizes of 15-25cm - Ideal for small succulents The 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 five refillable watering sticks (green) - Moisture meter for house plants that has refillable replacement core - Each stick last for approximately 6- This soil aqua meter has plant water indicator that changes color depending on soil type - White indicates watering; blue indicates it's been watered Color: Green Material: plastic Package Contents: 2 * Plant Soil Moisture Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.