Feature: 1. [Polarized Lenses] Blocking up to 99% of UVA and UVB rays coating, high efficiency filtering of ultraviolet rays, excellent optical performance, blocking harmful light sources, suitable for daily wear. 2. [Open Ear Type] Pay attention to the surrounding environment while enjoying music, suitable for cycling, running, driving, fishing, playing basketball, shopping and other outdoor activities. 3. [HiFi Stereo] Dual speakers, stereo, intelligent noise reduction microphone, reduce call noise, built in 100mAh rechargeable lithium battery, 1.5 hours of charging, continuous music for about 6 hours. 4. [Touch Control] Control by two touchpads located on both sides of the glasses frame or using voice function, completely free hands, waterproof and dustproof, with stable compatibility and connectivity. 5. [Low Loss] Bluetooth 5.0 plus independent sound decoding chip, CD level sound decoding, support 16bit, 24bit sound, sampling rate up to 48kHz, reduce sound quality loss, preserve music details. Specification: Item Type: Bluetooth Sunglasses Frame Material: TR90, Mixed Material Lens Material: PC, TAC Model: KY02S Bluetooth: 5.0 Channel: Dual Speakers, Stereo Battery Capacity: 100mAh Lithium Battery (Delivered with Battery) Charging Time: 90min Use Time: 6 Hours Frame Color: Black Lens Type: Polarized Lens Control Method: Touch. Package List: 1 x Bluetooth Sunglasses1 x Charging Cable1 x Glasses Cloth1 x Manual