Digital zoom 

If you use EN EL 15, you can use these batteries. But I'm not sure if your camera allows them to charge in camera 

Thanks for your question. Of course, you can. But not directly, you can connect this 4k digital camera to the computer via the included USB cable, transfer the photos to the computer, then send the photos to the email through the computer. Any further questions, please feel free to contact us, we have a professional pre-sales and after-sales team, prepare to solve any problem for you, please rest assured to buy. 

Thank you for your question. This model no touch screen, but it can be easily operated by the buttons on the panel. 

this solar camera have 4X digital zoom.