Oura's Ring 4 was a traditional smart ring, but Oura's patents show some incredible ideas that could pay off in the Ring 5.

RF coupling is one of the most important and tricky issues that RFIC designers always must confront while developing wireless ...

This ultra-simple phone includes a number of unique features for older users, such as a dial tone, padded ear cup, operator assistance, and a simple yes/no interface. Other features include voice ...

This high-end, thin CDMA phone is dominated by a large finger-touch display. One standout feature is the 3.2 megapixel auto-focus camera with face detection and VGA-resolution video capture up to ...

002028.SZ Sieyuan Electric Co., Ltd.