Bộ Tai Nghe Nhét Tai Không Dây Bluetooth 4.2 + Edr I7S Plus Có Hộp Sạc Tương Thích Với Điện Thoại Android

i7S Plus TWS Headphones True Wireless Bluetooth 4.2+EDR Earphone In-ear Stereo Music Headsets Hands-free w/ Microphone Charging Box Compatible with Android Smartphones Tablet PCDescription:
i7S Plus BT Headphone is specially designed for you to listen music and answer calls while doing sports or driving, which
Features advanced True Wireless (TWS) BT 4.2+EDR technology, built-in high-grade microphone and speaker, hands-free function and lightweight design. A great companion for your daily life, office time, driving or travel.  

Features:
TWS Headphone Design:
Wireless dual ear design, left and right ear channel separation. You can use the headset solely, or used them in pairs (stereo mode).
Hands-free with Mic:
HD Microphone grasps the detail of voice and enables hands-free calls while driving or doing sports. Also supports multi-point connection.
Long Battery Life:
45mAh battery in each headphone ensures 3-4 hours of music playing time. The charging box enables headset charging for about 4 times.
Charging Box:
The 450mAh charging box can charge for the earphones and can be used as a perfect storage case for them, protecting them from damages.
Comfortable to Wear:
4g lightweight, mini size design provide you long time wearing comfort, and guarantees stability when doing sports.

Specifications:
Model: i7S Plus
BT Version: 4.2+EDR
Operation Range: Up to 10 meters (no obstacle)
Frequency Response: 20Hz-20KHz
Sensitivity: 42dB
Impedance: 32Ω
Battery Capacity: Earphone: 2 * 3.7V 45mAh; Charging Box: 3.7V 450mAh
Charging Time: about 1-2 hours
Music Play Time: about 3-4 hours
Standby Time: about 100 hours
Charge Port: Micro USB
Color: Black, White (Optional)
Headphone Size: Approx. 4.7 * 1.8 * 1.8cm / 1.85 * 0.70 * 0.70in
Headphone Weight: 4g / 0.15oz
Package Size: 9.8 * 9.8 * 3.3cm / 3.85 * 3.85 * 1.30in
Package Weight: 87g / 4.40oz

Package List:
1 * Headsets with Charging Box   
1 * USB Cable
1 * User Manual (English / Chi