【Automatic Self Watering System】: This indoor irrigation system is the perfect solution for watering your indoor plants when you're away for the holidays, on vacation. Set the time interval ( 1 to 9 days) and water time (1 to 99 second), once programmed, this automatic irrigation kit will take care of watering the plants for you. Plant watering device equipped with filter, prevents debris from entering the device and causing clogging.【USB Rechargeable】: Running this plant irrigation system with usb rechargeable, portable to hang on the water bucket of your bedroom, balcony or garden for houseplant self-watering. Normally it can be used about 3 months after fully charged.【Widely Used】: Supports automatic watering and time delay. It is suitable.