Description:
Unique Design Lightweight and Comfortable to Wear: amazingly lightweight design and extra soft gel earbud for comfortable fit, the Main earbud can use either left or right ear , Main earbud with a assistant Wired Ear Bud transform from Mono to Dual channel, you could listen to music in your both ears if you like
Secure Fit - Never Fall out : First put the Main earbud in your Ear , and then Twist it Anticlockwise, After that it will Secure properly , it is Good for Driving , Office working and Walking , You also can used it Runing or Gym
Advance Technology : Bluetooth V4.1 for compatibility with most Bluetooth enabled devices - smartphones, tablets, laptops, etc , Built-in microphone enables you to call at any places; easy control between voice calls and music

Features:
Connectivity: wireless
Connection port: USB
Sensitivity:96dB
Frequency response range:20-20KHz
impedance:16Ω
Waterproof: no
Bluetooth version: bluetooth 4.1
Talk/music time: 3-4hours