YOFOTHS Mini Aquarium Heater Alumina Ceramic, USB 10W Digital Display Thermostat, Compact Thumb-Size Fish Tank Heater with Temperature Control, Black, for 1 Gallon Betta Tanks (USB10W)

COMPACT DESIGN: Thumb-sized aquarium heater measuring just 1.97 inches in length and 0.47 inches in width, perfect for small tanks between 1 gallons
DIGITAL CONTROL: Features a clear LED display showing real-time temperature readings with an adjustable range of 64-93°F for precise temperature management
ENERGY EFFICIENT: Advanced ceramic heating technology provides rapid heat conduction while consuming 20-30% less energy. Perfect for maintaining a stable and energy-efficient environment for your fish!
DURABLE CONSTRUCTION: Made with alumina ceramic material offering superior thermal stability, enhanced impact resistance, and excellent corrosion protection
SAFETY FEATURES: Professional-grade electrical insulation maintains reliable performance at high temperatures, with secure suction cups for stable positioning