Mini Wireless 4.1 Stereo In-Ear Headset

Bluetooth mode:hand free/headset/av/av rcp profile bluetooth version:v4.1 color:black/white/pink/beige/blue communication:wireless connectors:usbusb frequency response range:8-24000hz8-24000hz function:bluetooth is wireless:yes line length:none music time:approx. 3 hours package:yes plug type:l bendingl radio frequency:2.4ghz resistance:9898 sensitivity:1223db1223db style:in-ear support app:no support apt-x:no support memory card:no talk time:approx. 4 hours the charger power supply:ac input dc output 5v 110-240v the transmission range:10 meters time to market:2016 transmission power:class2 use:portable media player vocalism principle:other waterproof:no wireless type:bluetooth with microphone:yes brand name:none model number:none material:- size:approx. 2.7*1.5*1.2cm idiosyncrasy:bluetooth weight:18 charging time:other battery capacity:other