IBG-09 smart Bluetooth glasses use ABS+PC lenses and ABS+PC+TR frame. It has a 180mAh battery with 5-6 hours working time. Built-in Bluetooth 5.4, it supports voice assistant activation, music playback, phone calls and sliding color change. The diagram shows product dimensions. It fits square, long, diamond, oval and round face shapes. There may be 1-3mm errors in measurement; data for reference only, subject to the actual product.