Original NIA X3 SP Wireless Stereo Bluetooth Headphones Headsets Fold able Sport with Mic Support TF Card Micro SD card, FM Radio , hands free controlling phone call. Excellent sound quality with Powerful bass

 ** COLOR: White or Black

+Features:Bluetooth, Micro SD Card Play, FM Radio, Audio Input
+Sound Mode:Stereo
+Speaker:Customized 40mm Nd Driver Unit
+Impedance:32 Ohm
+Sensitivity:108+/-3db
+Frequency Response:20-20000Hz
+Input Power:3.7 VDC, 280mAh, Built-      in rechargeable Liion Battery     5 VDC 500mA,  Micro USB charging
+Operating Time:5-6 Hours
+Charging Time:Approx. 2 Hours

Bluetooth
+Version:4.0
+Transmission Frequency:2402 Mhz to 2480 Mhz
+Communication Rang:10M(Max)
+Standby Time:Approx. 48 Hours
+Profiles:A2DP, AVRCP, HSP, HFP

Micro SD Play
+Audio Formats:MP3/WAV/WMA/FLAC/APE
+Micro SD Card Capacity:32GB (Max)
+Micro SD Card Format: FAT32
+Micro SD Card Reader:Yes

FM Radio
+Radio Frequency Range:88-108Mhz
+Audio Input:3.5mm(Please DO NOT turn on the device when aux cable connected)
+Audio Share:Yes, through 3.5mm aux cable

Support App: Scan the code on the box and then you can control the headphone with your mobile phone.

Wired Headphone: If use an Aux cable to listen, please turn off the headphone firstly