Features 1.Directional Sound Transmission: Directional sound, keep it secret, and accurately transmit the sound to your ears. Get rid of the trouble of earphones in your ears. 2.Noise Reduction: The creation of Bluetooth sound glasses, upgrading chips, headsets and speakers to ensure effective reduction of call noise and restore fidelity. 3.HD Calls: Wireless Bluetooth glasses use high end Bluetooth, stable performance, strong compatibility, stronger functions, and bring you HD call quality. 4.Long Battery Life: Bluetooth glasses come with a large capacity battery, 100mAh, charge for 90 minutes, and listen to music continuously for 6 hours at 80% volume. 5.P5 Waterproof: Sports music glasses cooperate with accurate craftsmanship to achieve P5 waterproof and sweatproof, as well as short term soaking. specificationItem Type: Smart Glasses_x000D_ Material: TP90, PC TAC_x000D_ Bluetooth Protocol: 5.0_x000D_ Charging Time: 90min_x000D_ Built in Polymer Lithium Battery: 100mAh_x000D_ Channel: Dual Speakers, Stereo PackageList1 x SmartGlasses1 x Charging Cable1 x Manual1 x Glasses Cloth