Feature:

--Bluetooth-compatible glasses speaker: dynamic drive, unique sound cavity design, avoid hearing impairment --In-ear design helps you keep an eye on your surroundings, avoid danger and enjoy music --Open solution: allows you not only to listening to music, answer calls, but also to hear notifications from glasses, while listening to the world around you --The sunglasses have built-in noise-canceling microphones that allow you to make and receive calls --Transmission distance: 33 feet (10 meters) Description: Product : Smart Glasses Lens: anti-blue light lens; Lens material: acrylic; Frame material: ABS+PC; Speaker type: dynamic speaker; Microphone: -40dB±3dB; Compatible profiles: A2DP, AVRCP, HSP, HFP; Transmission distance: 33 feet (10 meters); Battery: Rechargeable Li-ion 75mAh; Continuous playback: 3-6 hours (normal volume); Standby time: 10 days; Charging time: 2 hours; Waterproof grade: IP7; Bluetooth-compatible version: CSR5.0; Working temperature: -10°C-+50°C Humidity 0-90%; Packing list: 1 x Bluetooth-compatible glasses 1 x USB cable 1 x glasses cloth 1 x instruction manual 1 x packing box Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.