Circular Automatic Suction Cup Maximum Load Capacity 330 lb Overall Length 7 87/100 in Series Ottovac Overall Width 7 87/100 mm Overall Height 3 27/50 in Wattage 6 W Compatible Surface Type Flat Smooth Voltage 6 V DC Includes Battery Operating Temperature - Minimum 32 Degrees F Activation Mechanism Automatic On/Off Switch Air Consumption 0.14 cfm Battery Type AA Alkaline Operating Temperature - Maximum 140 Degrees F Weight 2.6 lb