Water Level Meter Buoy Water Shortage Reminder Display Plug Potted Moisture Gauge Indicator Hydroponics Plants Humidity Sensor~whiteProduct Details:.Product name: Water level meter.Type: Water Shortage Reminder.Diameter: About 15mm.Specifications: 9.5 x 16.5cm(120 ), 12 x 20cm(150 ), 14.5 x 22cm(180 ), 26 x 36cm(300 ).Packing include: 1 Pc x Water level meter ( Type as you choose).Feasures:.1. No batteries or electricity needed, plug and use.2. This water level gauge is used for flower pots. It can display the water level to remind you of watering.3. When there is no water in the pot, the buoy of the water level gauge will be at the bottom. On this note, pull up the water level and water plants through the hole.4. Simply insert the level into the soil, and it will help your plants grow healthy and strong.Notice:.The size is measured by hands, please allow minor error of measurement. Photo color might be a little different from the actual product due to color display of different monitors.