WEIWEISTORE Mini Aquarium Heater, 15W USB Aquarium Heating Rod with Digital Small Fish Tank Heater for Thermostat Saltwater, Fresh Water Aquarium Heating Mat  (Pack of 1, Mini Aquarium Heater)

USB-Powered Secure Heater: Operates on 5V USB power—low-voltage design for security and energy efficiency. Works with power banks and adapters for flexible placement. Long-lasting Quartz Tube With Security Layer: Heating element is sealed in a shock-resistant quartz tube with a protective barrier to prevent breakage and keep wiring dry. Touchscreen Control With Clear Display: Set temperatures between 20°C–34°C with a tap. LED screen shows current and target temperature for precise environment control. For Small Aquariums & Reptile Enclosures: Provides stable warmth for tropical fish, turtles, geckos, and other pets in tanks or terrariums up to medium size.