TWS Earphones BT 5.0 Wireless Stereo Sports Mini In-ear Headphones

Features:
New BT 5.0 with strong compatibility and stability has been improved several times than old BT version. 
Can automatically Pair, Power on after taking out from the charging case. 
Wireless stereo, left and right channel separation,both ear can be used separately.  

Headset parameters
Wireless Version: V5.0+EDR; 
Driver: 8mm; 
Impedance: 32 OHM; 
BT use band: 2.4GHz; 
Output power: 22mW; 
BT distance: 10 meters (NO barrier); 
Frequency response: 20-20000Hz; 
Operating voltage range: 3.0V-4.2V; 
Battery Capacity(Charging case): Internal 300mah rechargeable battery; 
Battery Capacity(earbud): Internal 50mah rechargeable battery; 
Charging Case?Size: 63*32*30mm; 
Talk time: about 3-4 hours; 
Music time: about 3-4 hours; 
Standby time: about 100 hours; 
* (Actual battery life may vary due to different use frequency and sound volume); 
Package Size: Approx. 13*8*4cm; 
Package Weight: Approx. 120g;  

Package List
2 * mini BT Headphones(left and right earphones,can be used separately); 
1 * Charging case; 
1 * USB Charging Cable; 
4 * Free extra ear cap; 
1 * User Manual