Does the case consume a lot of power?
The case will only draw a tiny amount of power fromthe phone through NFC when transmitting a new picture,and after the transmission is complete the ink screendisplays the pattern without the need for power to maintainit. The working principle of the ink screen: electronic inkcapsule molecules are pushed to different positions throughthe control of positive and negative charges, and when thecurrent stops, the ink capsule molecules will be fixed in thecurrent position. So the screen display does not need powerto maintain, overall the demand for cell phone power isvery small.
How does the pattern enable switching?
E-Ink phone case is designed to transmit data and powervia NFC.
Can it be charged wirelessly?
It supports wireless charging, but there is no magneticattraction. lt can't add a magnetic ring because of the eink screen on the back.
Is it waterproof?
It is not waterproof. Do not throw it into water to avoid damage to the product.
How long does the case last?
If the ink screen is not damaged by external forces, it will last at least 2 years.