A professional ND filter with phone clip, compatible with most smartphones on the market, can reduce the light getting into lens and slow shutter speed, perfect for moving object photography like water flow, cloud, traffic stream, and more, helping to shot professional and wonderful photos with smartphone. FeaturesWith broad compatibility, this 37mm ND filter is suitable for most smartphones on the market.Can reduce the light amount getting into the lens and slow shutter speed, shooting more professional and wonderful photos just with smartphoneAdjustable density filter from ND2 to ND400, satisfying your various photography needs. Perfect for moving objects photography like flying bird, flowing water, clouds, traffic flow, and more, also suitable for human stream photography.Comes with a phone clip for easy and convenient installation and use; mini size and light weight, convenient for storage and carrying.SpecificationsBrand: Andoer Color: Black Material: Optical glassProduct Size: 4 * 4 * 1cm/ 1.5 * 1.5 * 0.39inchProduct Weight: 30g/ 1.05ozPackage Size: 8 * 5 * 5cm/ 3.1 * 1.5 * 1.5inchPackage Weight: 40g/ 1.4ozPackage List1 * ND Filter1 * Phone Clip