The telescope is for indoor and outdoor use, portablebr/ Monocular Telescope For Smartphone Are you always embarrassed with a telescope that may be large and difficult to carry around?br/ monocular telescope will allow you to magnify distant images with ease. Provide you with the ability to see clear, crisp magnified images at your convenience.br/ Bright & Clear View ior BAK4 Prism and face(fully multi coated) green film optical coating technology provides the brightness image with excellent light transmittance reaching up to 99%.br/ Product introduction:br/ Prism category: BaK4br/ Coating: Upgraded Full Green Coatingbr/ Focusing : rotating eyepiece adjustmentbr/ Features: This is a cost-effective monocular. Handheld high magnification, objective lens diameter of 52mm large diameter. Broad and clear vision. Broadband green film coating for objective lensbr/ use:br/ Traveling, outdoor sports, watching ball games, performances, performances, bird watching, watching, wildlife viewing, camping, mountain climbing, adventure, shooting, archery, fishing, observing the terrain, enjoying the scenery, etcbr/ Accessories: desiccant, exquisite waist bag, lens cleaning cloth, portable rope, thickened packing box