Constant 26°C warmth with simple, safe operation Why you need it: Keeps betta and tropical fish in a steady, comfortable environment without constant monitoring or manual adjustments. Eliminates temperature swings that stress smallwater species. How it solves the problem: Intelligent heating control maintains a consistent 26°C, and red/green status indicator lights show heating or ready states at a glance. Compact, efficient design for small tanks Designed for 3 L desktop aquariums and similar small setups. The 10 W power output provides efficient heating without excess bulk or energy waste. Spacesaving and lightweight construction blends into desktop displays so you can maintain stable temperatures without changing the look or layout of your tank. Built for reliability and safety Durable, crackresistant materials and a shatterproof body reduce the risk of physical failure in everyday use. Rubbersealed waterproof construction provides leak performance and electrical protection for safer operation around water. Supports steady temperature control to protect delicate fish and reduce maintenance. Portable USBpowered convenience USB power lets you run the heater from a power bank, laptop, or USB adapter—no wall outlet required. Ideal for travel, temporary setups, or locations without standard AC power. Easy to install and remove for short trips or temporary quarantine tanks. Practical use scenarios Desktop betta aquarium: Maintain a constant 26°C on your office desk so your betta stays healthy and active without daily thermostat checks. Travel or temporary housing: Use a USB power bank to keep a small quarantine or hospital tank at a stable temperature during weekends away or while moving fish. Small planted or nano tank: Preserve stable conditions for sensitive tropical microfish or shrimp in compact displays where space and aesthetics matter. Key specifications and compatibility Target temperature: 26°C constant warming Power: 10 W Recommended tank size: 3 L (small desktop aquariums) Power source: USB (portable, no wall outlet required) Indicators: Red/green status lights for heating and ready states Materials: Crackresistant, shatterproof body with rubbersealed waterproofing What sets it apart Purposebuilt for small tanks: compact 10 W design and 3 L compatibility Simple, reliable temperature control: fixed 26°C with visible status lights Safetyfirst construction: shatterproof and rubbersealed for leak use Portable USB power for flexible placement and travel use Use this heater when you need a compact, dependable way to maintain a stable 26°C environment for betta and small tropical fish without complex setup or constant monitoring.