Color: Black Dimensions: 8.5 x 1.8 cm / 3.34 x 0.7 in Applicable to: Water volumes up to 25 liters Features: Control: Advanced fixed-point thermostat technology and intelligent chip control eliminate manual adjustments, making aquarium maintenance easy. Innovative Temperature Control: This aquarium heater is equipped with a highly sensitive temperature sensor for precise temperature control. Say goodbye to temperature fluctuations and trust its intelligent control to keep your aquarium habitat comfortable. Safety: This aquarium heater features a fordurable construction and black gold sand material for even heating, maintaining a stable temperature for your aquarium pets while minimizing energy consumption and eliminating the risk of explosion. Easy to Use: This aquarium heater can heat small aquariums up to 25 liters, and its space-saving mini design doesn't take up valuable desk space. Your aquarium pets will thrive in a comfortable environment. Our aquarium heater features a USB port for easy connection to a power bank, ensuring safe operation. Low 10W power consumption increases convenience and energy efficiency, providing a worry-free experience. Includes: 1* Aquarium Thermostat Note: Please allow slight dimensional errors (1-2 cm/0.39-0.78 in) due to manual measurement. Actual product received is subject to accuracy. Please also allow for slight color variations between monitors.