The sturdy earphones are ultra-comfortable to wear for prolonged periods of time.  The sunglasses themselves fit nearly all head shapes and sizes making them ideal for both men and women. This product is the advanced version of Bluetooth Sunglasses on today's market and features micro USB, standby time of 10 days, a maximum transmission range of 10 meters, SNR > 60db and a working temperature of 10 - 55°. The kit includes sunglasses camera, earphones, USB cable for downloading images and video to your computer, a clear and comprehensive user manual, a protective case and a lens cleaning cloth.