【HI-FI Stereo Sound】Build a Bluetooth audio eyeglasses, upgrading from front-line chips, headsets to loudspeakers to ensure the reduction of noise on the phone and restore the fidelity effectively.  
 【Bluetooth Headphone】Upgraded Bluetooth Chips, Faster and steadier. Excellent sound quality, steady compatibility and connection.  
 【IP67 Waterproof】Professional water-proof and sweat-proof performance. Equipped with water-proof performance of up to Level IP67 in cooperation with precision technology. Effectively preventing the splash of domestic water and sweat.  
 【Long Working Time】Abundant power, more long-lasting endurance. In-built large-capacity dual batteries (220mAh). Enduring for around 7 days with only 2 hours' charging.