[Upgraded Version] Alien 5 Bone Conduction Glasses Bluetooth 4.1 Headphones Polarized Sunglasses Myopia Waterproof Wireless Headset Hearing Aid for iPhone HTC LG Samsung Matted Black (Frame+Mold Lens) Ortofon Speaker sensitivity - 50mW

Speaker sensitivity - 50mW

lifetime support

while its built-in battery provides up to 30 hours of playback on a single charge

75mm OFC Cable

Touch together to wear around your neck

[Upgraded Version] Alien 5 Bone Conduction Glasses Bluetooth 4.1 Headphones Polarized Sunglasses Myopia Waterproof Wireless Headset Hearing Aid for iPhone HTC LG Samsung Matted Black (Frame+Mold Lens) Ortofon Speaker sensitivity - 50mWBrand: HORIZON OUTDOOR Color: Frame+Mold Lenses Features: UPGRADED BONE CONDUCTION SPEAKER: Upgraded bone conduction speaker, with the exclusive soundproof cavity design, reduced the sound leakage by 87%. CAN BE USED WITH PRESCRIPTION LENSES: The lens can be replaced very easily, and we provide free transparent lens mold for Myopia&Older. OPEN EAR DESIGN GUARANTEE YOUR SAFETY AT ANYWHERE: You can easily listen to music and you aslo can hear the sound