Features:

1. Bluetooth 4.0+HSP+HFP+AVRCP+EDR + A2DP technology
   Lets you wirelessly connect to compatible devices, including select  Apple iPhone 6/6PLUS/5s/5c/5/4s/4c/3/2 iPAD iPod, Android Smart phone;  Samsung Galaxy S5/S4/S3 Note2/3/4; Galaxy Tablet; Nokia Toshiba Sony and  BlackBerry Smart phone and devices; most Mac and Bluetooth-enabled PC  laptops Tablet and desktops.

2. Built-in microphone
   Allows clear communication; Enables use as a headset. Music and phone  controls ensure ease of use. digital noise cancellation techonlogy ,

3. Built-in rechargeable lithium-polymer battery
   With Li-battery enables up to 6-7 hours of talk time or audio playback;  Standby time is about 100 hours. 

4. Lightweight, comfortable earbuds - quality sound on the go

5. Media  on the move.
   Subway commute? Coffee shop lounging? Taking a walk? Whatever your  scenery, enjoy it more while listening to your own tunes - all without  the hassle of connecting with a wire.

6. Cutting-edge sound.
   Featuring the state-of-the-art Bluetooth 4.0 standard (8 times the  bandwidth over the 2.1 standard) and aptX audio codec technology, these  earbuds produce clear, full sound. The snug-fitting eartips block out  peripheral noise letting you enjoy your media - free of distractions.

7. Simply...take control.
   We put the most used functions (adjust volume, skip tracks, power, and  phone functions) in easy reach and even included a power meter on iOS 5  and over. With up to 7 hours of play time between charges, don't worry  about charging often, but when you do, the clip-on charger does the job  with ease.

8. Sportier audio.
   the ultimate Bluetooth sporting headset.

Specification:

*Product Model: BT508
*Supports Bluetooth V4.0
*Supports profile A2DP
*Frequency response: 20Hz-20KHz
*Sensitivity: 120db±3db
*SNR: ≥93DB
*Distortion: 0.4％
*Digital volume control
*Built in Mic-phone
*Driver: 33 feet
*Micro USB port for battery recharge
*Wireless range: 33 feet
*DC battery power: built-in rechargeable lithium battery
*Battery life: 6~7 hours talking or Listen music time; Standby time  100 hours;
*Includes: 3 sets of eartips: 1 small, 1 medium, 1 large

Package details:
1 x Bluetooth headset
1 x USB charging cable
1 x 3 sizes ear tips: (1 small, 1 medium, 1 large)
1 x User Manual
1 x 2 sets of stablilizers

1 x 2 detachable earhooks

How to Connect the Headphones with Your Cellphone（for the first time):
1 step: long press Power button to turn on, you can see the blue light,BUT  DON'T STOP PRESS,UNTIL THE RED AND BLUE LIGHT APPEAR ALTERNATELY;
2 step: open related Bluetooth device,to click scan to search related  device. After scanning, waiting for the device of BT-508.
3 step: choose BT-508 Bluetooth headset to connect and get paired among the  scanned devices. BT-508 will make the sound of connecting successfully.
4 step: Bluetooth device will play when successfully paired, when the blue  light slow flash.

No need to repeat all of above steps the next time to pair, you only need to:
1. Open the Bluetooth function on your cell phone;
2. Press  the power key shortly(no more than 2 seconds, only Blue LED light), and  release quickly, then headphones will automatically search and connect with  the paired phone or tablet. (Note: if you press the power key more than 4-5  seconds, the red and blue light flash, that means the headphone enter into  pairing mode, so you should pair again, so maybe need more time connecting.)
3 Just play music directly.
 
Note: