NIA X2 Wireless Bluetooth Headphones with Mic Stereo Bluetooth Headset

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:4.2
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
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