WATER REMINDING: The water shortage or excessive watering will cause the death of most plants. This thoughtful soil moisture sensor will remind you to watering when the soil dries. So you never worry too much about the watering of potted plants.CUTE BIRD DESIGN: The colored bird shape is so cute and lifelike which make it can be used as an ornament for flowerpots to make your bonsai more beautiful.EASY TO USE: After removing the transparent film under the bird, the moisture meter will be powered. If you want to turn off the song function, touch two probes at the same time or insert the probe into the wettest soil.AUTOMATIC OPTICAL SENSOR: With an automatic optical sensor inside, it will automatically turn off the song reminder function in the evening, but it will still sing automatically when it senses daylight to indicate that the battery is fully charged.NOTE: Watering is required only when it sings once every 15 seconds. Due to the humidity trigger points of the sensitive plants is different, please carefully adjust the probe depth. The drier the soil, the deeper the probe needs to be placed.