Product Details:
Colour: Black
Bluetooth version: v4.0+EDR,
Transmission range: 10m/32.8ft
Bluetooth frequency: 2.4-2.46GHZ
Working voltage: 3.2-4.2V
Music time: 2.5H
Talk time: 3H

Package Contents:

2 x Headphones
1 x Power Storage Organizer
1 x Box X1