This is the Inon UCL-G100 SD underwater close-up lens. For those who need it. The lens element itself is Inon and has been replaced with a new, unused one. The close-up attachment for GoPro was only installed and used once, so there are minor scratches. The serial number has changed, so there are two original boxes. Everything in the pictures is included. The lens body is unused, so no claims or returns are accepted. Shipping will be via Takkyubin (Yamato Transport). It's significantly cheaper than the retail price, so please refrain from price negotiations; comments will be ignored.