Sleep comfortably knowing your airbed will keep its pressure all night long. 3-meter wall plug. 120-volts AC. Maximum weight 500-lbs. Never Flat technology is an auto-engaging, whisper quiet pump that maintains constant air pressure throughout the night. Secondary pump continuously monitors and senses when it needs to silently engage in order to maintain the chosen comfort level throughout the night. Circular coils with vertical and horizontal reinforcements for support and comfort while the soft-touch flocked top keeps bedding in place. 78"x60''x18''