The suction cup supports up to 7.5 pounds, and is actuated by a built-in thumb actuated pump. The pump features a red indicator line and as you pump, the suction increases. When the red indicator line disappears it indicates the pump is securely attached.
Can be attached to any smooth or relatively smooth nonporous surface: glass, metal, plastic, ceramic and even varnished wood.
Maximum load capacity of 7.5 lb (3.4 kg).
Red line on the pump plunger indicator.
The camera bracket (included) can be replaced by a tripod head (not included).