Cross-Border New Smart WiFi Audio Wholesale Stereo Sports Driving Wireless Card Insertion Cycling Glasses

Requires a TF card, the glasses themselves have no internal memory and require an external memory card. There is no Bluetooth function. You can record video while simultaneously viewing the footage on your phone in real-time, and you can also view playback. The glasses can be fitted with prescription lenses, and the lenses have a film that needs to be removed before use.