Nikon Lens Pen Cleaning Pen System is a great accessory for any optics user. A soft retractable brush and a non-liquid compound on a natural chamois tip to remove fingerprints, dust and grit from any lens. A must for maintaining coated lenses. Manufactures Website Address www.nikonsportoptics.com Warranty Information Lifetime Full Warranty. If any product is found to have defects in workmanship or materials, Nikon will, at their option, repair or replace it at no charge, even if you're not the original owner.