Are you looking for a light ，mini and fashionable headphone while running.The Wireless Stereo Bluetooth 4.1 headphone is your top choice! Mini， light-weight design， with functions of CSR noise isolation and echo cancellation. The Stereo headphone helps you enjoy your running perfectly. 

Features:
With Bluetooth 4.1， noise isolation and echo cancellation technology for perfect sound quality. 
Built-in microphone ensures the great sound quality.
Compatible Bluetooth-enabled devices， such as， Smarts Phones， Tablet PC， Notebook， Laptop， etc.
Super easy and fast paring with your smartphone or other Bluetooth device for high-fidelity stereo music， movies and chatting.
Bluetooth 4.1 provides strong signal to make sure a clear transmission.
10m transmission distance without obstacles.
Supports connecting two devices simultaneously.
Low consumption and low battery warning.
Sweatproof design is perfect for sports. 
Super mini size fashionable and lightweight.suitable for exercising like driving， running ect.

Specifications:  
Type: Headphone In-Ear 
Bluetooth Version: 4.1
Bluetooth transmission power: CLASS-4dBm
Bluetooth Range: 10-20m
Signal-To-Noise: !#!gt!*!=95dB
THD: !#!lt!*!=0.1%
Color: Yellow / Black / Rosy / Green / Blue (Optional)
Lasting Talking Time: 5 hours
Charging Time: 1 hours
Charging Voltage: DC5V / 500mA
Working Voltage: DC 3.7V
Cable Length: 52cm / 20.47in
Headphone Weight: Approx.15g / 0.54oz
Package Size: Approx.15 * 7 * 3.5cm / 5.91 * 2.76 * 1.38in                    
Package Weight: Approx.52g / 1.84oz 

Package List:
1 * Headphone
1 * USB Cable 
1 * Ear Hook 
1 * Ear Bud
1 * User Manual (English)