Quartz USB Fish Tank Heater 10W Low Voltage(USB with sheath) | Auto constant temp 26C, red/green indicator, safe low voltage, fits 2.5L tanks, for ideal for small fish
10W USB Aquarium Heater 26C Auto Thermostat(USB) | Auto 26C thermostat, USB powered, safe for fish, compact design, for ideal for small tanks
USB Fish Tank Heating Rod Stainless Steel Safe(10W) | Stainless Steel, USB Powered, 5W/10W Options, Raises Temp 5-12°C, Gradual Heating For Fish Safety
Hoppipola USB Fish Tank Heater Stainless Steel, 5W/10W Automatic Temperature Control Rod for Aquariums, Safe Gradual Heating via USB Power
USB Fish Tank Heating Rod, Stainless Steel Aquarium Heater with Automatic Temperature Control, 5W/10W Safe Gradual Warming for Tropical Fish(10W)
USB Fish Tank Heater, Heating Rod Safe Efficient Automatic Temperature Control for Aquarium Small Fish Tank 25W Heater(10W)
