The Celestron PowerSeeker Telescope Accessory Kit includes two 1.25" Kellner eyepieces, offering a clear and sharp view through the telescope. This accessory kit is designed for telescopes with 1.25" eyepiece and filter compatibility, providing a field of view of 1.5 degrees. The kit comes with an altazimuth mount for easy and precise aiming of the telescope, and the objective lens diameter is 70mm. With a focal length of 15mm and manual focus, this Celestron PowerSeeker telescope accessory kit is a valuable addition to any telescope setup for enhanced viewing experiences.