K3 Sunglasses Polarized Glasses Wireless BT4.1 Music Ear

K3 bluetooth headset sunglasses perfectly combines polarized sunglasses with bluetooth 4.1 headset. polarized eyeglass, providing protection to reduce glare, filter light and protect your eyesight. fashionable glasses frame, uses high-grade materials, lightweight, flexible and durable. compatible with bluetooth-enabled android and ios smart phones, such as, for iphone 6s 6; for samsung s6 s5 note 5 4,for lg, for htc one; tablet pc, etc. supports hands-free function with microphone, bringing you much convenience to answer the incoming call during driving & travel. also supports voice prompts.specifications: model number: k3 bluetooth version: bluetooth 4.1, class 2. frequency range: 2.402 ~ 2.480ghz bluetooth profiles: a2dp, avrcp, headset. operating distance: 10m (33ft) battery: built-in 3.7v / 70mah li-ion polymer rechargeable battery music playing time: 4 ~ 5 hours talk time: 4 hours charge voltage: 4 hours charge time: 1 hour charging port: micro usb port. color: black