Packing list: 
<br />1 x Earphone, 
<br />1 x USB line (50cm), 
<br />1 x English instruction, 
<br />1 x Audio line (120cm)
<br />
<br />NX-8252 Foldable Wireless Bluetooth Headphone Headset Stereo Music Earphone For Tablet PC 
<br />Features:
<br />Sound track: stereo
<br />Wearing style: headphone
<br />Bluetooth version: V3.0
<br />Foldable design, convenient to store and carry
<br />High quality wireless Bluetooth V3.0 stereo headset offers you remarkable sound quality
<br />Enhanced noise reduction, good choice for listening music, watching movie, answering phone calls, etc
<br />Built-in microphone makes hands-free calls easy
<br />Adjustable padded headband design makes the headphones have elastic medium comfort
<br />Multi-functional buttons on the side allow you answer/reject/end a call
<br />Built-in Li-ion battery supports charging via USB cable
<br />
<br />Description:
<br />Sound track: stereo
<br />Wearing style: headphone
<br />Bluetooth version: V3.0
<br />Bluetooth Name: NX-8252
<br />Bluetooth distance: about 10 meters (open area)
<br />Bluetooth operating frequency: 2.402GHz-2.480GHz
<br />Frequency response range: 20Hz-20000Hz
<br />Audio port: 3.5mm
<br />Charging interface: Micro USB interface
<br />Battery capacity: built in 400mAh lithium battery
<br />Sensitivity: -58dB + 3dB
<br />Signal to noise ratio: - 98dB
<br />Distortion: 0.1%
<br />Input voltage: DC5V/1A
<br />Standby time: about 180 hours
<br />Talk time: about 12 hours
<br />Listening time: About 9-10 hours
<br />Charging time: about 2 hours
<br />Product certification: ROHS, CE
<br />Function: pause / play, volume adjustment, up and down switch, answer / hang up, microphone and so on
<br />Compatibility: mobile phones, tablet, PC, laptops and other Bluetooth devices
<br />Color: black, white, red, blue (optioanl)
<br />Material: plastic
<br />Product size: 9*7*8cm