Feature: Strong compatibility, low power consumption of Bluetooth 4.1. It can not only answer calls, but also listen to music. Automatically switch to phone call mode when making and receiving calls. Have previous/next song control, volume up/down control. Ultra-light design adopts ABS and PC material to make it lighter and comfortable to wear. Bluetooth devices such as Suitable for iPhone SAMSUNG HUAWEI Xiaomi iPad. Fashionable design, fashionable sunglasses + wireless earphones, suitable for driving, cycling and hiking. Protect vision, black polarized smart lenses can filter light and protect your vision. Multifunctional glasses, foldable glasses design, hydraulic telescopic headphone rod, 270rotation for free adjustment. This bluetooth earphone and sunglasses are the perfect combination of practicality and fashion. It allows you to enjoy the freedom of wireless listening and hands-free calling. Main functions, answer and hang up calls, play/pause, control volume, switch between up and down songs, switch between Chinese and English, voice assistant. Specification: Type: glasses bluetooth headset Shell material: high quality ABS Bluetooth version: Bluetooth V4.1 Working frequency 2.4GHZ-2.480MHZ Wireless connection range: 10 meters Transmit power: Glass2 Battery capacity: 180mAh Headphone talk time: 6 hours Standby time: 150 hours