Used a few times after purchase. Operation confirmed. 【High-Magnification Teleconverter】 The SONY SEL20TC is a teleconverter with a 2x magnification factor. This doubles the focal length of your lens, allowing you to capture distant subjects in greater detail. 【Full-Frame Compatible】 This teleconverter is compatible with full-frame sensors, enabling a wide range of shooting possibilities. It's particularly well-suited for landscape and wildlife photography. 【Convenient Carrying Case Included】 A carrying case is included for easy portability, allowing you to use it with peace of mind even when you're on the go. An instruction manual is also included, making it easy to use even for beginners. - Brand: SONY - Model Name: SEL20TC - Type: Teleconverter - Magnification: 2x - Mount Type: E-mount - Compatible Sensor Size: Full-frame - Accessories: Carrying case, Instruction manual Teleconverter