Features: Digital LED display with adjustment accuracy of 0.5°C or 1°F and display accuracy of 0.1°C; simple operation. Compact size saves space in fish tanks; small and stylish design. Suitable for aquariums, mini tanks, turtle tanks, amphibians, and pet drinking water applications. USB aquarium heater with temperature control range from 18°C to 34°C; automatic shut-off when temperature exceeds 36°C. Specifications: Material: Nichrome Wire Color: Black Size (Approx.): 5.5 x 2 cm / 2.17 x 0.79 in, LED Display 6.5 x 3 cm / 2.56 x 1.18 in Weight (Approx.): 140 g Note: 1. Please allow 0–1 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Mini Aquarium Heater