<p>Features: HD UV Protective Lens, Wireless Bluetooth Headset, Waterproof, Active Noise-Cancellation. Description: Bluetooth version: Bluetooth V5.3, Speaker specifications: 8 ohm electric 0916 speaker, Transmission distance: 10m, Battery specifications: 80mAh battery with protective plate, Charging time: about 3 hours, Standby time: about 80 hours. Product specification: Product model: TWS-F open directional audio smart glasses, Frame color: black, Frame material: TR90/mixed material, Wireless version: V5.3, Charging time: about 120 minutes, Battery capacity: 80mAH, Charging voltage and current: DC5V</p>