Product DescriptionPlant Watering Spikes - Plant Self Watering Device Automatic Watering System.Upgraded VersionUniversal Design , no holes needed, suitable for multi-drinks bottles, red wine bottles. constant pressure to make the water flow more stable Old version Only suitable for; a variety of beverage bottles, not suitable for red wine bottles adjustFeatures:- No need to drill holes in the bottom of the bottle or cut the bottle, - Suitable for inner diameter (0, 7-1 inch) from the bottle - No need to worry about your flowers when you're on a business trip or vacation.Controlled water flow lable Plant watering devices with control valves can control the speed of water droplets in the drop from 0 to 100 to 1000 . 90 s / 1, which makes it last 1 to 30 seconds. 15 days. Therefore, you can go out and play without any worries. It is recommended to use the slowest speedHoliday AssistantWhen you enjoy your long vacation, you don't have to. worry about your plants.Widely ApplicationWhether your plants are inside or outside the outside, to; home or office, these watering cans are perfect for any plant.