The lenses have a very stylish smoke mirrored finish and the frames have a black matte finish color. The volume control and call answer buttons are smartly located on the arm-piece. There is also a built-in earpiece so you can clearly hear what the caller is saying. These sunglasses are compatible with all standard Bluetooth equipped phones. They feature a talk time of 3.5 hours and standby time of 90 hours.

* Main function: Bluetooth Headset * Bluetooth Version: 2.0, class II * Profiles: Headset, Handsfree * Certification: CE, FCC, BQB * Operation Range: 10m (33 ft) * Talk Time: 3.5 Hours * Compatibility/Pairing: All Bluetooth compatible phones * Frequency Band: 2402MHz-2480MHz ISM Band * Power Source: Li-ion polymer battery (built-in) * Operating Temperature: -10 C to 50 C * Includes: Bluetooth Handsfree / Headset device, Bluetooth ear piece, charging cable