Dome for dive camera/ phone

This is for taking photos while swimming with your cell phone(with a waterproof case of cause!) or GoPro or any other waterproof camera.

You can get above-water and under-water scenes at the same time.

Need to use a balloon with PE material. Search for "Clear Balloon(透明气球)" to find this balloon on Taobao.

PS.
Use a pump to blow the balloon. Don't blow it with your mouth, otherwise, it will introduce a lot of water vapor into the balloon.