i7s TWS True Wireless Bluetooth Earphones Invisible Headphones In-ear Stereo Music Earbuds Multi-point Connection Hands-free w/ Mic Charging Box for iPhone Android Phones

i7s TWS True Wireless Bluetooth Earphones Invisible Headphones In-ear Stereo Music Earbuds Multi-point Connection Hands-free w/ Mic Charging Box for iPhone Android Phones

i7s TWS BT earphone is specially designed for you to listen to music and answer calls while doing sports or driving, which features advanced True Wireless (TWS) BT 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:
Advanced BT Technology:

True wireless (TWS) BT technology ensures transmitting strong signal in high quality & high speed and offering high-fidelity stereo music.
TWS BT Design:
Wireless dual ear stereo design, left and right ear channel separation. You can use the Left and Right ear earphone solely (single track mode), or use in pairs (stereo mode).
HD Microphone:
High-sensitivity microphone reduces ambient noises and grasps the detail of voice, ideal for in-car calling or working use.  
Multi-point Connection:
It can simultaneously connect two smarts phone. So you can seamlessly switch between your business and personal phones.
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.

Specifications:
Model Number: i7s
BT Version: 4.2+EDR
Transmission Distance: 10m (no obstacle)
Frequency Response Range: 20Hz-20KHz
Mic Sensitivity: -42dB
Impedance: 32Ω
Battery: 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
Color: Black, White (optional)
Earphone Size: Approx. 4.7 * 1.8 * 1.8cm / 1.85 * 0.70 * 0.70in
Charging Box Size: approx. 6.7 * 5.5 * 2.7cm / 2.63 * 2.16 * 1.06in
Item Weight: approx. 40g (32g of the charging box, 4g of each earphone)
Package Size: approx. 9.8 * 9.8 * 3.3cm / 3.85 * 3.85 * 1.29in
Package Weight: approx. 92g / 3.24oz

Package List:
1 * Pair of Earphone
1 * Charging Box
1 * Micro USB Charging Cable
1 * User Manual (Chinese & English)