【Stylish Design】 The sophisticated black frame matches any style, making it perfect for everyday use. 【Blue Light Cut Function】 Equipped with a blue light cut function to protect your eyes when working on a PC or using a smartphone. 【Comfortable Fit】 Made of lightweight materials, it can be worn comfortably for long periods. - Frame Color: Black - Lens Shape: Rectangular - Material: Metal and Plastic - Purpose: Blue Light Cut Thank you for viewing. I've only been using it for about two months. The sunglasses attach with magnets and are removable.