Purchased in 2024. I opened and attached it to check the operation, but I am selling it because I no longer have the opportunity to use it. A lens adapter from the same manufacturer is also included. Telephoto Lens * Focal Length: 52 mm * Lens Type: Teleconverter * Compatible Mount: GoPro * Camera Lens Description: Zoom Lens * Minimum Focal Length: 52 millimeters [Telephoto Lens Single 52mm] This is a single 52mm diameter telephoto lens that allows for telephoto shooting when attached to the GoPro HERO series. [Our adapter or frame is required for use] This product is a [lens-only product] for those who already have our GoPro-specific adapter or frame. [Up to 4x zoom possible] A total of 4x zoom is easily possible with the touch zoom function of the GoPro body and the 2x zoom of the telephoto lens (limited to the following usage environment). [Telephoto shooting is not possible in 4K] There are limitations to the usage environment. Please check before purchasing (see attached image). Lens Adapter * Product Model Number: GLD5215MJ129 * HERO10Black, GoPro HERO11Black, GoPro HERO12Black, HERO9Black [Adapter for attaching filters/lenses] This adapter allows you to attach various filters and lenses, such as your 52mm diameter UV filter, CPL (polarizing) filter, and macro lens, to compatible models. [Easy to attach and detach] Made of ABS resin, which combines flexibility and high strength. It is easy to remove and fits perfectly after installation, and does not move. [Lightweight and compact] Suitable for carrying. It is durable, so you can use it with confidence outdoors. [When removing the adapter, first remove the filter/lens] When removing the adapter from the camera, be sure to remove the filter or lens first. After that, remove the adapter by lifting the lower part of the front of the adapter upwards, and it will come off smoothly.