AC 220-240V 28W 11" x 21" Heating Warmer Pad Mat for Reptile Snake Lizard Tortoise Spider Durable and reliable , guard your pets safely and comfortably through a whole winter Designed with knob to adjust the heat generated and thus the temperature.Please pay attention to the voltage before ordering to make sure the item suit your area Keep your pet warm and comfortable ,ideal for Snake ,Lizard ,Tortoise and other medium to large reptiles. Power:28W Dimensions:11" x 21"