Item Type: BT Glasses Material: TP90, PC, TAC BT Protocol: 5.0 Charging Time: 90min Built in Polymer Lithium Battery: 95mAh Channel: Dual Speakers, Stereo1[Directional Sound] This BT glasses transmit directional sound into your ears, maintaining safety and providing accurate music without the need for earbuds. 2[Noise Reduction] BT sound glasses, from the chip to the headset and speaker optimization upgrades to ensure effective call noise reduction and fidelity restoration. 3[Stable And High Definition Calls] Smart glasses use a high version of BT solutions, stable performance, strong compatibility, to bring you high definition call sound quality. 4[Long Battery Life] This wireless sunglasses built in 95mAh high capacity battery, charging 90 minutes, 80 percent volume continuous listening to music for 6 hours. 5[IPX5 Waterproof] Wireless music glasses with accuracy technology, with IPX5 waterproof performance, effective protection against water, sweat, and brief immersion.1 xBT Glasses1 x Charging Cable1 x Instruction Manual1 x Storage Bag