Bluetooth earbuds wireless earphone with Mic and charging case

This earphone is a mini earphone ,have only 5.3g ,4. Ultralight, invisible,mini ,just 5.3g.it is packed in a mini charging avaible storage box, easy to carry and charge .Double battery ensures two hours continue playing. 

This bluetooth earbuds wireless earphone with mic and charging case use the Bluetooth version V4.1, bring wonderful wireless experience ,it is proved to be Waterproof , sweatproof, dustproof design ,provide ture wireless, separating dual earphone , single or dual wearing are both available.

Specification  Ture wireless earbuds:
Bluetooth version : AB1511,  V4.1
Bluetooth profile :HFP/A2DP/HSP/AVRCP
Bluetooth frequency :2.4GHz-2.48GHz 
Transmission range :about 10m (Free Space)
Distortion factor : Less Than 1% at 1000Hz
Noise reduction : CVC6.0 with Microphone
Charge case battery capacity :300mAh (self-charging about 4 times) 
Lithium battery : 3.7V/45mAh
Conversation time :about 2-3 hours
Music time :about 2-3 hours
Standby time :Up to 48hours
Charge time :1.5 hours
size/weight :L23*W12*H26mm/5.4g