Features:
Endurable batterys life, equipped with a large capacity charging-box.
Fingerprint touch-control, equipped with function buttons which let you easily control your music and answer the phone call.
The digital display screen on the charging-box can show the electricity clearly, so you can charge the charging-box timely.
BT 5.0 technology offers lower powers consumption and stable transmission. And the operation range is up to 10 meters.
Wire-less dual ear design, convenient to operate and quick to pair with BT-enabled audio devices.
Ergonomically designed for a more comfortable for a canal and unable to throw away.
Specifications:
Model: F2
Material: ABS
Color: Black, White, Blue, Pink(Optional)
BT Version: BT V5.0
Charging-Input: DC5+0.25V
Transmitting Distance: 10m/32.81ft
Charging-time: 1hr
Music time: ≥3.5hr
Earphone-battery(Each Earphone): Li-ion Polymer-Battery 50mAh
Charging-box-battery:  Li-ion Polymer-Battery 280mAh
Operation Frequency: 2.402GH2-2.480GHz
SNR: -42±3dB
Distortion: <1％
Package Size: 150*80*30g/5.91*3.15*1.18in
Package Weight: 80g/2.82oz
Package List:
1*Pair of Earphones with Charging-Box 
1*Charging-Cable
1*User Manual
1*Set of Replaceable Ear Tips