X16business bluetooth headphone hook single side free to improve clear call ultra long standby amazon hot style products..

 New lug mini bluetooth smart wireless stereo headphones 4.1 bluetooth headphones X16

Product description:

1. CSR bluetooth 4.1
2. One-button cycle volume adjustment;
3. Up and down selection;
4. Support switching between Chinese and English;
5. Call number broadcast; 
6. IOS system power display; 
7. Incoming/rejected calls;
8. Last digit replay;
9. Hd voice quality. 

• Version: bluetooth 4.1+EDR
• Solution: the UK CSR solution
•  RF transmission power :90DB (more stable transmission)
• Signal transmission channel: Cassl 2
• Wearing method: in-ear earring
• Size: L59 * * H10MM W15
• Weight: 7.1 g
• Transmission sensitivity: -42db back room high-end transmitter
• Maximum transmission range :10 m
• Transmission rate :24MBPS
• Extremely long talk time: 5.5h  Listening time: 4.5h
• Charging time :2H  Standby time: 180H
• Welcome e - business customers, channels to inquire.