Burris Refurbished Products Burris refurbished products have been returned to Burris by a customer, and may exhibit minor cosmetic blemishes from usage that will vary from refurbished product to product. Refurbished products and their included accessories have been restored to a guaranteed operational standard for a new product by Burris. All Burris refurbished products are covered by the Burris Forever Warranty (View Warranty) Transform your hunting experience with the versatile Burris Clip-on v2. Whether you prefer a handheld tracker or want to turn your traditional riflescope into a thermal optics, the BTC v2 offers seamless adaptability. With its 1x, 2x, and 4x power zoom capabilities and a selection of five vivid color palettes, the Burris Clip-on allows you to identify thermal signatures up to 750 yards out.