Celestron StarSense Explorer DX 102AZ App-Enabled Telescope – 102mm Refractor with Smartphone Dock & StarSense App – iPhone & Android Compatible – Easy-to-Use for BeginnersSMARTPHONE POWERED SKY TOUR: No experience needed! Just dock your phone, launch the StarSense Explorer app, and follow the on screen arrows to locate stars, planets, nebulae, and more. PATENTED STARSENSE TECHNOLOGY: Unlike other astronomy apps, StarSense Explorer uses sky recognition technology to turn your phone into a celestial navigation system, analyzing star patterns overhead to pinpoint your telescopes position. TONIGHTS BEST TARGETS, INSTANTLY: