Thank you for viewing. I purchased this a few years ago and have only used it once. However, since it's made of rubber, there is some small dust attached. I hope someone who understands that this is a used item stored by a private individual will use it. Below is information from the manufacturer's website: ◼️Size: W78 x H78 x D64mm ◼️Weight: Approximately 89g (including the strap) ◼️Material: [Body] Silicone rubber [Lens] Glass [Strap] PU ◼️Compatible Size: 3.5-inch LCD screen ◼️Magnification: 3x ◼️Notes: No diopter adjustment function Even if the LCD monitor is difficult to see outdoors during the day, it blocks out surrounding light and makes it easier to see. This is a magnifying glass with a 3x magnification, making the screen appear larger, so it can also be used for film checking in a light box. It can be hung around the neck with the attached strap or fixed to a single-lens reflex camera.