It's a creative must-have item that further evolves the iPhone 17 Pro's high-performance camera. Since the amount of light can be freely adjusted from ND2 to ND32, it is possible to shoot smooth videos and fantastic photos with a slow shutter while preventing “white flying” even in bright places during the day. It perfectly combines high optical performance with the convenience of magnets. Good point: It uses strong magnets, and can be attached “perfectly” to the iPhone 17 Pro's MagSafe mechanism or special case in an instant. There's a sense of speed so you don't miss out on shooting opportunities, and an overwhelming sense of security that it won't shift or fall during use. By simply rotating the filter frame, you can smoothly switch between the 5 levels of dimming. When shooting videos, the shutter speed is fixed to create “natural bokeh like in a movie,” and you can easily enjoy long exposures that take smooth, string-like pictures of waterfalls and river flows with just one smartphone. It's nice that you can use this somehow without thinking too much about it. It's easy to use without any particular expertise. The precise design prevents light from escaping through gaps in the filter and suppresses flare and ghosting. Since high-quality optical glass is used, it is possible to maintain clear and colorful images without compromising the resolution of the iPhone 17 Pro. It comes with a sturdy and slim special case, and the portability so you can always keep it hidden in your bag without worrying about damaging the lens is attractive. The professional “Cool Design” black housing and exquisite memory engraving are truly professional specifications. I think the appearance on the iPhone 17 Pro is very cool and nice