Specifications:

Magnification: 2x
Mount: Sony E
Construction: 5 elements in 3 groups
Diaphragm blades: 7, rounded
Filter diameter: 77mm
Dimensions: 2.4 x 2.4 inches (61 x 61 mm)
Weight: 0.4 pounds (180 g)

Features:

2x focal length multiplier: Increases the focal length of compatible lenses by 2x, providing a longer reach for capturing distant subjects.

Maintains full G Master performance: When used with compatible G Master lenses, the SEL20TC preserves the high image quality and autofocus speed of the original lens.

Compact and lightweight design: The SEL20TC is small and lightweight, making it easy to carry and use on the go.

Dust and moisture resistant: Built to withstand harsh conditions and protect against the elements.

Compatible with a wide range of lenses: The SEL20TC can be used with many Sony E-mount lenses, including G Master, G, and E-mount lenses.