This is a pair of Bluetooth sunglasses that is designed to bring you the ultimate user experience. They are well designed to fit the curve of your face perfectly. This pair of sunglasses is made of top-quality material for a long lifespan.

• Optical lens: Baolilai polarized lenses (anti UV400).
• Lens curvature: 600C (Southeast Asian style), 800C (American style).
• Bluetooth: 4.0.
• Frequency range: ISM2.402-2.480GHz.
• Transmission range: 10 meters.
• Battery capacity: 90mAh polymer lithium battery.
• Holding time: 5h.
• Standby time: 150h.
• Charging voltage: DC 4.2V/500mA.
• Charging time: 2h.
• Weight: 32g.