1.EASY TO OPERATE One button control, On/Off, Answer/End call, Rejevt call, Redial last number, Play/Pause, Next song, etc.Press easily and operate conveniently., wear the bud ont ear for better call clarity.
2.SMALL & LIGHTWEIGHT COMFORT : Lightweight design makes it so convenient to pop right into your ear, and more comfortable and Lightweight when wearing. is small and convenient to carry around, you can enjoy music or watch videos anytime, anywhere.
3.BLUETOOTH 5.0& EDR TECHNOLOGY : The J21 is compatible with all Bluetooth-enabled devices such as Windows Phones, PC Laptop, iPad, iPhone, Samsung Galaxy, Android cell Phones, and other devices with Bluetooth audio port,ect. Support connect with during 33 feet (10 meters) wireless range.
4.Great Battery Life: playing music for up to about 4 hours ， only take 2 hours to fully charged, battery status displayed on IOS devoice.
5.HI-FI SOUND QUALITY : Support mute function during calls as well, built in HD microphone, inputting high quality voice, promoting a call conversation of the transmission performance, and enables you to call clearly at any place.