Fontec XPO Original Wireless Bluetooth Headphones

COLOUR:                Black
DRIVER:                  50mm 
IMPEDANCE:          20 Ω   
CABLE LENGTH:      2.2M
CONNECTION:       3.5mm + USB
AUDIO CONTROLS:   IN-LINE
SOUND: SURROUND SOUND
MIC SENSITIVITY:   -42±1dB
Frequency range:    20Hz-20KHz

wireless mode, if will turn off automatically after 5 minutes. Smart Power Save Mode: If not connected Standby time: up to 120 hours Music time: up to 8 hours Talk time: up to 8 hours battery let you know the earphone battery IOS mobile phone realtime display the earphone  SupportS wireless stereo audio. PC, wireless adapter, or an other device that A2DP stereo music from laptop computer, tablet and convert between music and phone calling Allow you to enjoy digital-quallty music wirelessly Support wireless stereo devices to receive coming call, it is more convenient. It will prompt the phone number when you have amode freely.