Double V5.0 .
Auto Paring .
Switch song up and down .
Open the lip and connect automatically .

Specification:
1. listening to music, support music and phone call,
2. Caller ID, the last call back, English voice prompts, boot, pair, shut down the phone power will be low voice prompts;
3.  phone power display, you can always watch the headset power situation, do not worry about the headset no electricity to make your life worry;
4. Bluetooth headset every time connected to the phone after the shutdown, and then open the Bluetooth headset will automatically connect back to the phone, but also more convenient;
5. Intelligent compatibility: support all with Bluetooth mobile phone, tablet, notebook, singing it, QQ music, movies, etc., all the mobile phone;
 
Features:
1. Driver: 15mm
2. Impedance: 32 OHM
3. Bluetooth version: Bluetooth v5.0 EDR
4. Output power: 30mW;Battery capacity 60MAH
5. Bluetooth distance: 10 meters
6. Frequency response: 20-20000Hz
7. Operating voltage range: 3.0V-4.2V
8. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol
9. Powerful noise de-noising circuit (active noise reduction)
10. switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times)
11. Charging time about 1 hour .
12. Talk time is about 2-3 hours,music time about 2-4 hours
13. Standby time is about 120 hours ,The charging time is about 60 minutes
14. Bluetooth Automatic pairing.It will pair well in 10 seconds after turn it on. 
National Shipping is a  long time , it may battery off , Charge it first .
Package Includes:

2 x i9s Bluetooth Headphones(left and right earphones)

1 x Charging box

1 x USB Charging Cable

1 x User Manual

(you can choose retail box or not , it is diffrient prices)