A7 TWS True Wireless Bluetooth Headphones Invisible Earphone In-ear Stereo Music Headsets Hands-free w/ Microphone Charging Box

A7 TWS True Wireless Bluetooth Headphones Invisible Earphone In-ear Stereo Music Headsets Hands-free w/ Microphone Charging Box

A7 TWS 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 BT Design:

Wireless dual ear stereo design, left and right ear channel separation. You can use the Left and Right ear headset solely (single track mode), or use in pairs (stereo mode).
Lightweight & Invisible:
5g lightweight, mini size and 4 pairs of eartips provide you long time wearing comfort, and guarantees stability when doing sports.
Built-in Microphone:
High-sensitivity microphone reduces ambient noises and grasps the detail of voice, ideal for in-car calling or working use.  
Charging Box:
Turn the power switch of the charging box to ON, then the headphones can be charged in the 300mAh charging box.
Long Battery Life:
50mAh battery in each headphone ensures 3-4 hours of working time. The earphone and the charging case can be fully charged in 1-2 hours. 

Specifications:
Model Number: A7
BT: 4.2+EDR
Transmission Distance: 10m (no obstacle)
Impedance: 32Ω
Sensitivity: 108dB
Driver Unit: φ8.6mm
Power: max. 10mW 
Battery: Earphone: 2 * 3.7V / 50mAh (501215); Charging Box: 300mAh (502035)
Charging Time: about 1-2 hours
Working Time: one for 3-4 hours and a set for 2-3 hours
Color: Black
Charging Box Size: Approx. 8.1 * 4.8 * 3.7cm / 3.18 * 1.88 * 1.45in
Item Weight: Approx. 53g (43g of the charging box, 5g of each earphone)
Package Size: Approx. 10 * 7.7 * 4.1cm / 3.93 * 3.03 * 1.61in
Package Weight: 98g / 3.47oz

Package List:
1 * Pair of Earphone
4 * Pairs of Eartips
1 * Micro USB Charging Cable
1 * User Manual (English)