Tiny titan water heater with thermostat for 3.8-10L tanks, it is best for turtle tanks/betta fish tanks/offices desktop fish tanks, or small home tanks. Key Features: 1. Included: 1x Heater Rod with An External Controller 2. Suitable for betta fish, shrimp and small home tanks. 3. Slim flat profile that measures 4.3″x 1.8″x 0.9″, it is quite space-saving and easy to hide behind filter/wood/rock with two strong suction cup mounts 4. The flat design allows it can be placed vertically or horizontally at a gravel-free aquarium bottom to heat low water levels in turtle tanks or other shallow tanks as long as the heater rod is fully submerged 5. The tiny heater is for saltwater or freshwater aquariums 1–20 gallons, such as betta tank, turtle tank, shrimp tank, and planted tank 6. Tiny Titan compact water heater, there is a built-in shatterproof tube wrapped with two heating elements mica plate and nickel wire, along with high-impact plastic housing, Hygger titan water heater ensures the safety of your aquatic pets while maintaining a proper temperature 7. Two strong suction cups keep it in place 8. The detachable case prevents debris or water scale from clogging up inside and affects its function 9. The knob controller allows a quick set temperature without getting hands wet, especially in winter, the adjustable wide temperature range is 59 °F to 93 °F in 1-degree increments 10. When you unplug it to change the water, the Titan heater will memorize the last setting 11. Monitor water temperature at a glance with the digital readout 12. The Titan heater rod shows real-time water temperature and indicator light 13. It will be red when heating, green light when the proper temperature has been reached 14. When out of the water, the auto shut-off feature ensures overheat protection to keep your livestock from damage 15. It will auto-turn off bef...