Mini Submersible Water Pump (3V-5V) Amphibious + USB

Build your own automatic plant watering system or a mini fountain with this reliable micro pump. It is designed to be fully submerged in water, making it incredibly quiet and easy to install—just drop it in your water reservoir. It runs on a safe, low voltage (3V-5V), meaning you can power it directly from an Arduino (via a transistor), a USB power bank, or even solar panels. Although technically “amphibious” (can work outside water if primed), it is best used submerged to keep it cool and primed.