Automatic watering device for plants 12 pack with slow release valveFlow controllable : you can set traffic for 1-15 days or More depending on the time you need, , no troublesome setup. Upgraded equipment is more sealed, auto water plants will not be blocked by Mud and stop draining or will not flooded you flower box and killed everything.Easy to use : Dr. pepper, Pepsi, coca cola, Deet Coke, Aqufina or other bottle that have 1. 1inch inner diameter capsule, Without any tedious installation, all you need just drill some holes at bottom of bottle or cut it and then a regulating valve that can adjust the speed of the flow, so that the speed of the flow can be adjusted according to the length of the holiday.Multi-scene application : Whether your plants are indoor or outdoor or garden, at home or in the office, create a Self-Watering system, to ensure your plants always have enough moisture. Fits for use with potted plants, houseplants, patio plants, hanging baskets, desk pots, hanging plants and outdoor gardens.Economic And High Quality : This plant watering system is made of ABS plastic. A green and environmental product approved by the environmental protection department.