Features
Wireless stereo Bluetooth headphones
Helps to reduce radiation while answering calls
Allows you to conveniently answer calls or listen to music while doing sports
Features an FM radio
Directly plays MP3 music from an external TF card
Designed with Call/Play/Pause buttons
Charged via the 5-pin USB charging port
On-ear design for a comfortable fit
General Specs
Brand & ModelD-420  
TypeWireless Bluetooth headphones
Audio FormatMP3， WMA，WAV
FM RadioYes
Card SlotSupports an external TF card 
CompatibilityBluetooth enabled cell phones