Reversible heater for small animals, operating temperature 38°C - Product Name: Reversible Heater - Size: 142 x 92 x 15mm - Power Source: AC power The hamster I had when I was using it chewed on the tube protecting the cord. (See photos 5 and 7) Also, the box is torn from when I opened it. (See photo 4) Please understand that there may be minor scratches as well before purchasing.