?The K3-A Bluetooth Headset Sunglasses perfectly combines Polarized Sunglasses with Headset. The K3-A Bluetooth Headset Sunglasses uses Bluetooth 4.1 technology supports super-fast data transmission and has perfect compatibility£¬ easy to pair with Bluetooth-enabled Audio Player£¬ offering you wonderful music. K3-A is equipped with high-performance Microphone and supports hands-free function£¬ bringing you much convenience to answer the incoming call during driving &amp; travel. ?K3-A Bluetooth Headset Sunglasses is an indispensable companion for outdoor activities£¬ such as Cycling£¬ Fishing£¬ Travelling£¬ Climbing£¬ Golfing£¬ etc.? <br><br><strong>Features:</strong> <br>K3 Bluetooth Headset Sunglasses perfectly combines Polarized Sunglasses with Bluetooth 4.1 Headset.? <br>Polarized Eyeglass£¬ providing protection to reduce glare£¬ filter light and protect your eyesight. ? <br>Fashionable Glasses Frame£¬ uses high-grade materials£¬ lightweight£¬ flexible and durable.? <br>Compatible with Bluetooth-enabled Android and IOS Smart Phones£¬ such as£¬ for iPhone 6S 6; ?for Samsung S6 S5 Note 5 4£¬ LG£¬ HTC one; Tablet PC£¬ etc.? <br>Supports hands-free function with Microphone£¬ bringing you much convenience to answer the incoming call during driving &amp; travel. Also supports Voice Prompts.? <br>K3-A Bluetooth Headset Sunglasses is an indispensable companion for outdoor activities£¬ such as Cycling£¬ Fishing£¬ Travelling£¬ Climbing£¬ Golfing£¬ etc. <br><br><strong>Specifications:</strong> <br>Model Number: K3? <br>Bluetooth Version: Bluetooth 4.1£¬ Class 2.? <br>Frequency Range: 2.402 ~ 2.480GHz <br>Bluetooth Profiles: A2DP£¬ AVRCP£¬ Headset.? <br>Operating Distance: 10m (33ft)? <br>Battery: Built-in 3.7V / 70mAh Li-ion polymer rechargeable battery <br>Music Playing Time: 4 ~ 5 hours <br>Talk Time: 4 hours <br>Charge Voltage: 4 hours <br>Charge Time: 1 hour <br>Charging Port: Micro USB port.? <br>Color: Black <br>Main item size: 14.5 * 15.0 * 5.0cm / 11.0 * 7.87 * 3.93in? <br>Main item weight: 21g / 0.7oz? <br>Package size: 17.0 * 8.5 * 6.0cm / 14.5 * 10.6 * 6.49in <br>Package weight: 129g / 4.58oz? <br><br><strong>Package List:?</strong> <br>1 * Bluetooth Sunglasses <br>1 * Wired Earphone <br>1 * Cleaning Cloth? <br>1 * USB Cable <br>1 * English / Chinese User Manual.