Features:
1. [4 in 1 Multifunctional Headphone]
Stereo Bluetooth + 16G TF Card MP3 player + FM Radio + 3.5mm Wired Headset function.
2. [Wired and Wireless Connection]
Bluetooth 4.0 + EDR technology ensures strong signal and fast transmission, easy to pair with almost all Bluetooth-enabled audio devices to enjoy wireless stereo music; with 3.5mm audio jack, it can connect to a variety of music players (Such as, MP3 / MP4, etc) without Bluetooth function.
3. [Noise Cancellation]
Noise Cancellation and high-sensitive microphone reduce ambient noise and grasp the detail of voice. You can get high quality hands-free phone conversation even on the street.
4. [Long Duration Time]
Built-in rechargeable Lithium battery lasts up to 10 hours of Talking Time, 10 hours of Music Playing Time and 250 hours standby Time in Power Off state per charge cycle.
5. [Ergonomic design]
Foldable and adjustable headband length, super soft earmuff, comfortable to wear and easy for storage.

Specifications:
Model Number: SG-8
Type: Over-ear Stereo Bluetooth Headphone with Mic
Bluetooth version: 4.0 + EDR class 2
Support Profiles: HFP1.5, A2DP1.2, AVRCP1.0
Transmission Distance: up to 10m
Frequency Range: 2.402GHz-2.480GHz
Frequency Response: 20Hz-20KHz
Impedance: 32 ohm
Sensitivity: 95dB
Rechargeable lithium battery: 250mAh
Talking Time: abut 10 hours (depends on the volume)
Music Playing Time: about 10 hours
Standby Time: 250 hours (Power Off State)
Charge Time: 2-2.5 hours
Plug Type: 3.5mm Audio Port
Color: Orange; Red; Green; Blue (Optional)
Main Item Size (Folding): 17.5 * 12 * 8.2cm / 6.9 * 4.7 * 3.2in
Main Item Weight: 182g / 6.41oz
Package Size: 18 * 12 * 8.0cm / 7.1 * 4.7 * 3.1in
Package Weight: 249.9g / 8.8oz

Package List:
1 * Bluetooth Stereo Headset
1 * USB Cable
1 * User Manual