1) Wireless transmission makes receiver can be separately carried by another person, thus not any evidence can be suspected or detected from the sunglasses wearer, which assures great safety for the users to fulfill undercover assignments. 2) Tiny pinhole camera lens safely hidden inside the cool looking sunglasses(makes it ultra- discreet) 3) Two cameras available for your choice to observe both right and left side view; no need t start at objects directly, which also enhances the safety of undercover assignments. 4) 4 channels available for choice. 5) Long continuous operating time is up to 1 hour. 6) Portable solar charger guarantees strong & long time power supply for camera sunglasses up to 9 hours, which offering great convenience for outdoor operation. 7) Built-in transmitter (300ft. L.O.S. range) | 
