Features: Celestron StarSense Explorer 102AZ 102mm f/6.5 AZ Refractor Telescope  Use Smartphone App for Star Navigation  Follow Directions to Find Great Objects  Advanced Precise Alignment Algorithm  102mm f/6.5 Refractor Optical Tube  UNLEASH THE POWER OF YOUR SMARTPHONE: Let your iPhone or Android phone take you on a guided tour of the night sky—no telescope experience required. Just follow the arrows to locate stars, planets & more  PATENT-PENDING STARSENSE SKY RECOGINITION TECHNOLOGY: This one-of-a-kind scope uses your smartphone to analyze star patterns overhead and calculate its position in real time.  APP GENERATES A LIST OF TONIGHT’S BEST OBJECTS TO VIEW: The app tells you what’s in the sky based on your exact time & location. View planets, brighter nebulae, galaxies, star clusters from the city PLUS fainter, deep sky objects from darker locations.  EASY TO SET UP AND USE: Manual altazimuth mount with smooth, dual-axis slow-motion controls makes it easy to follow the on-screen arrows to your desired target. When the bullseye turns green, it’s ready to view in the telescope’s eyepiece.  HIGH QUALITY 4” REFRACTOR: High transmission XLT optical coatings and large aperture give you enough light gathering ability to view all the best celestial objects. Specifications: Celestron StarSense Explorer 102AZ 102mm f/6.5 AZ Refractor Telescope  Optical Tube: Assembly  Optical Design: Refractor  Aperture: 102 mm / 4"  Focal Length: 660 mm  Focal Ratio: f/6.5  Resolution: 1.37 Arcsec (Rayleigh)  1.14 Arcsec (Dawes)  Focuser: Single-Speed Rack-and-Pinion  Eyepiece Barrel Diameter: 1.25"  Diagonal: 90° Erecting  Finderscope: Yes  Optical Tube Dimensions: 32 x 4.6" / 81.3 x 11.7 cm Mount  Type Manual: Alt-Azimuth  GoTo Capability: No Tripod  Type: Adjustable, 2-Section  Material of Tripod: Aluminum General  Batteries: None  Adapter: None  GPS: No  Wi-Fi: No  Weight: 5.0 lb / 2.3 kg (OTA)  9.2 lb / 4.2 kg: (Mount/Tripod)  14.2 lb / 6.4 kg: (Fully Assembled) Kit content: Celestron StarSense Explorer 102AZ 102mm f/6.5 AZ Refractor Telescope Mount & Tripod Assembly StarSense Explorer Phone Dock 90° Erect-Image Diagonal 1.25" 25mm Eyepiece 1.25" 10mm Eyepiece StarPointer Finderscope