Hey, get outdoors with your friends and enjoy star gazing! Let StarTracker guide you to explore the universe. Just hold up & point the device to the sky and have fun! You will see any stars, constellations and deep sky objects you are watching in real time. << REMOVE metal case or magnetic cover to avoid interference and get accurate orientation! >> << Calibration steps: https://youtu.be/-Uq7AmSAjt8 >> Features: ★ All data is offline! ★ Fits all screen sizes from 3.5 inch to 12.9 inch for any