BETTATHERM BETTA BOWL HEATER, Convenient small round size heater that fits most fish or betta bowls, Completely submersible, bury under gravel, Can be used for glass or acrylic tanks and bowls, Increases water temperature 5-10 degrees over ambient room temperature, 3 inch diameter, , UPC : 097612240047, Size : 7, 5 WATT, Length : 9, 75, Width : 6, Height : 2, Product Type : Reptile - Heating Accessories / Miscellaneous, Shipping Dimensions: 9, 75x6x2 SKU: BC012145