Power Tool Consumables -2x Water Level Indicator Probe For Pot Plant Accessories 20cm Highlights Generic Brand 2x Water Level Indicator Probe For Pot Plant Accessories 20cm Description: No battery or electricity needed , plug in and use. This water level gauge is used for flower pots. It can display water level to remind you watering. When there is no water in the pot, the water level gauge buoy will be at the bottom. On that note, pull the water level and water plants through the hole. Simply insert the level into the ground and it will help your plants grow healthy and strong. A perfect tool for indoor and outdoor use. Specification: Material: Plastic Size: Approx. 20cm/7.87inch Package includes: 2 pieces of water level gauges Note: Do not pour too much water, it is best to leave the buyo under the upper water mark.