1. Directional Sound: Wireless bluetooth glasses use directional sound to keep the safety and accurately transmit the sound to your ears. 2. HiFi Sound Quality: Bluetooth glasses chip to headset and speaker optimization upgrade, to ensure effective reduction of call noise, restore fidelity. 3. Stable Performance: Smart bluetooth glasses use high version of Bluetooth solution, stable performance, strong compatibility, more powerful, to bring you high definition call sound quality. 4. Waterproof Design: Smart glasses with accuracy craftsmanship, with water resistance, up to IPX4 level, effectively prevent the splash of water, sweat, and brief immersion. 5. Easy to Control: Smart glasses are easy to control such as adjusting volume, acoustic playback, pausing, switching, answering or turning off calls, all at your fingertips. Package Included: 1 x Bluetooth Glasses Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement. ( 1 inch = 2.54 cm )