Use the Nebula Mars II to watch your favorite videos, no matter where you are. This portable projector is equipped with an integrated battery which allows for about 4 hours of wireless use. This can come in handy if there aren't any sockets around. When you connect the projector to WiFi, you gain access to the Android 7.1 operating system. This way, you can use apps or stream videos from the internet. Is your mobile device equipped with Miracast? If so, you can wirelessly stream images to the big screen. The device is equipped with various inputs, such as HDMI and USB. This means you can connect a laptop, media player, or USB flash drive.