Specification:TypeType A: Only One TelescopeType B: Telescope+Mobile Phone Holder+TripodEye cup materialRubberPrism materialGlassSize17x7x9.5cmOptical coatingFMC coatingField of view2.4/2.1Magnification10-300XEyepiece diameter15mmObjective diameter30mmPupil distance40mmWaterproofLife waterproofFeatu..