Package included: <br />1 x Bluetooth Sunglasses Headphone (Only 1 color of lenses are included in each package・ since the glasses are not detachable・ we don't provide extra lenses)<br />1 x User Manual<br />1 x Charging Cable<br />1 x Clean Cloth<br />1 x Carry Case<br /><br />Gray・ Coffee and Yellow lenses are polarized.  <br />Gray Lenses and Coffee Lenses for Day use for anti-glare and protection from Ultraviolet. <br />Yellow Lenses for Night use to enhance brightness.  <br />Transparent lenses are not polarized and used for blocking wind and dust.  <br /><br /><br />This Bluetooth headset & sunglasses is a perfect  combination of practicability and fashion. It can make you enjoy the freedom of  wireless listening and hands-free talk.<br />- Perfect combination of durable and fashion<br />- Auto switch to phone talking mode when making and receiving calls<br />- With Previous/Next Song control・ Volume Up/Down control<br />- Bluetooth V4.0・ support both headset and hands-free profiles<br />- Built-in rechargeable lithium battery・ comes with Mini USB cable<br />- Not only can answer the call・ but also used to listen music.<br />- Compatible For Smartphone/PC/iPad/PSP and other Bluetooth devices.<br /><br />Specifications: <br /> tLongest wireless range: 10 meters <br /> tTalk time: 6 hours <br /> tStand-by time: 150 hours <br /> tCharging time: 3 hours <br /> tNoise-signal ratio: 15 decibel resolution <br /> tFrequency: 2.402GHz -2.480GHz <br