This long-cord USB mini submersible fountain pump adopts DC 5V low-voltage brushless motor with extended USB cable, compatible with power banks, laptops, 5V adapters and solar panels for flexible power supply. Made of compact waterproof ABS, it features four bottom suction cups for stable fixation and detachable filter cotton to block debris and prevent clogging. A side rotary knob enables stepless flow adjustment. It runs ultra-quiet without overheating during long-time operation, with max 70cm lift height and matched 1m outlet tube. Fully sealed waterproof design ensures safe low-voltage operation without electric leakage. Widely applied for tabletop fountains, small aquarium circulation, pet water dispensers, rockery landscapes, hydroponic plants and DIY water circulation projects. OEM customization of logo and package is supported, lightweight and easy to disassemble & clean.