Yoidesu Open Ear Sunglasses - Polarized Voice Control

Spec: Item Type: Sunglasses Material: ABS Protocol: 5.2 Effective Distance: ≥15m / 49.2ft Sound Channel: Dual Speakers Stereo Lens Technology: Anti Blue Light, Blue Coating, Anti UV400 Ultraviolet Light Battery Type: 2 x 90mAh Lithium Ion Battery (Built In) Size: Approx. 148 x 49mm / 5.83 x 1.93in Package List: 1 x Sunglasses 1 x Magnetic Charging Cable 1 x Wiping Cloth 1 x Storage Bag How To Use: Connected and ready to use Note: Please allow some error due to manual measurement.