Invention guessing

This device is usually used in hot weather. It blows air and has wings.

This device is used only for taking pictures and capturing videos

This device can connect to the internet, you need a mouse and keyboard for this device. What is it ?

With this device, you can watch movies, news, gameshows,... indifferent channels. What is it ?

This device tells time and you wear it on your wrist. What is it ?

When your phone or laptop is low battery, you plug this device into them. What is the device ?