Featuresr it is small and delicate convenient to take alongr with ultrasonic technology transmission is more stabler with free app you can use the remote to take photos freely without any wifibluetooth connectionr with easy shot you are now no longer to be left out of a group shot againr when you first use it you must download the app named easy shot from google playapp store xiaomi app store or scan qr coder camera select switch between device39s front and rear camerar shutte