How to switch the language to English 1.Power on the headset; 2.Press the volume button to "+", simultaneously press the multi-function button.there will be a voice prompt,if the voice prompt is not the language you need,please loosen the button at the same time,then repeat this action,until the language is English,Finally the voice function is successfully switched. 180 DEGREE FLIP-BOOM ARM The 180 degree flip-boom arm allows you to adjust the angle and fit this headset in your right ear or left ear , This will create great convenience for users. ERGONOMIC DESIGN: These Wireless Stereo Earphones were carefully designed to provide you with the best possible comfort and experience. An ergonomic shape, combined with a completely adjustable ear-hook, prevents the earphones from moving during any activity. Furthermore, they are super lightweight, so as not to feel awkward. Specifications: ◆ Version: V4.1+EDR ◆ Portable lightweight and sweatproof design ◆ Charging time: About 2 hours ◆ Transmission Distance:10m ◆ Stand-by-time: About 180 hrs ◆ Conversation/Music Time: About 6 hours Package List: ◆ 1 X Bluetooth Earphone  ◆ 1 X Charging Cable ◆ 1 X User Manual  ◆ 2x Extra Ear Rubbers  Global-store brand has tested all products before shipping to ensure proper functionality.  Your satisfaction is our top priority. if you have any problems after delivery please feel free to contact us through the Amazon Email System and we will do our best to serve you. 

• PREMIUM HEADPHONES: These Bluetooth Headphones Contain the Best New Technology, Including CSR Bluetooth V4.1 + EDR APT-X Audio Decode Technology and CVC 6.0 Digital Noise Reduction Technology, Providing High Quality Stereo Sound with an Intelligent Ambient Noise Filter for Crystal Clear Calls and Music
• Connect Two Devices at The Same Time: Pair it with two Bluetooth-enabled devices at the same time and don't miss your calls when you have two cell phones
• PREMIUM FUNCTIONS: The Bluetooth Headphones Support Dual Bluetooth Pairing and Are Compatible with All Bluetooth Enabled Phones and Other Devices! Voice Control (Say "Yes" Answer Calls, "NO" Reject the Call) with HD Microphones is Safer and Easier for Running, Sports, Gym, & Exercise
• PREMIUM DESIGN: The Headset Ergonomically Fits to Your Ears, Providing a Comfortable and Secure fit. The Ear-hook is Fully Adjustable for More Comfort. The Ultra-light Weight is Perfect for Driving, Sports, Exercise, Running, Jogging, Workout, Office, School and Travel
• Main Specs: Up to 6H talk time, 8 days standby time, 2 hours charging time, 10 meters range, ultralight and comfortable design

PREMIUM HEADPHONES: These Bluetooth Headphones Contain the Best New Technology, Including CSR Bluetooth V4.1 + EDR APT-X Audio Decode Technology and CVC 6.0 Digital Noise Reduction Technology, Providing High Quality Stereo Sound with an Intelligent Ambient Noise Filter for Crystal Clear Calls and MusicGlobal-store