Powered via USB or a mobile charger for convenient and flexible operation. These pumps are suitable for a range of setups, from enhancing a computer cooling system to creating a small water feature, delivering reliable performance. 8pcs White Silent Mini Submersible Pump. Designed for efficient water circulation in various applications. This mini water pump operates on DC 3V and 5V, making it suitable for use with computer water cooling systems, aquariums, and other DIY projects. Compact and lightweight design. Each pump weighs 27.2 g, enabling easy installation and versatile placement. Silent operation minimizes noise and disruption, making it ideal for home or office use. Key benefits and features Functionality: submersible pumps capable of circulating water in small to medium setups. Compatibility: supports USB power or mobile chargers; operates on DC 3V and 5V. Size and weight: compact, lightweight design at 27.2 g per pump for flexible placement. Performance: reliable, quiet operation suitable for continuous use in various environments. Material/appearance: white color, compact form factor; submersible construction for safe operation in liquids. Practical use scenarios Computer water cooling: integrate into a compact loop to improve coolant circulation without adding significant size. Aquariums and small tanks: provide steady water movement for filtration and aeration in compact setups. DIY projects and small water features: create desktop fountains, model displays, or other lowvolume circulating systems with minimal footprint. Notes Power options include USB connection or compatible mobile charger. Each pump is designed for silent operation to avoid disturbing your environment. Suitable for home, office, or workshop applications that require reliable, lowprofile water circulation.