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)