During these days, we will use two types line control, we will send it to you randomly. Please feedback us your experience; 
<br />Note: 
<br />If you meet the connect problem or other problem, please contact us immediately,  we will help you to fix all problems. Thanks
<br />Please follow the last picture(red and blue LED flash) to pair your smartphone
<br />Remarque:
<br />Si vous rencontrez le problème de connexion ou un autre problème, s'il vous plaît contactez-nous immédiatement, nous allons vous aider à résoudre tous les problèmes. Merci
<br />S'il vous plaît suivre la dernière image (rouge et bleu flash LED) pour coupler votre smartphone
<br />
<br />Specifications: 
<br />Bluetoo version: V4.0
<br />Transmission Range: 10 m 
<br />Profile support:HSP/HFP/A2DP/AVRCP 
<br />Stand-by time:200 hours 
<br />Talk time:6 hours 
<br />Play music time:4 hours 
<br />Charging time:1 hours 
<br />Frequency range:2.402G-2.480G 
<br />Ambient temperature:-20/+60 C 
<br />Driver:11.5mm 
<br />Impedance: 16±15% 
<br />Frequency response: 20-2000HZ 
<br />Sensitivity: 110dB±3 dB 
<br />with microphone 
<br />  
<br />Features: 
<br />Ear and tail pipe connection with oblique angle design, comfortable and easy to wear. 
<br />It has high quality sound, enjoy your life. 
<br />A perfect gift for yourself or friend 
<br />  
<br />  
<br />Package contents:  
<br />1 x  Bluetooth 4.0 Earphone
<br />1 x User Manual  
<br />1 x Calbe Clamp,  
<br />2 x Pair of Earbud,  
<br />2 x Ear Hook,