Large-capacity Waterproof Expandable Hard Shell Backpack with USB Charging Hole(161 Light Grey)1. Material: ABS 900D strong film, EVA, polyester 2. Function: waterproof, with USB charging hole, shock resistance, capacity expansion, cut resistance, dry and wet separation 3. Accommodates computer size: 17 inches 4. Design of USB charging interface on the side of the bag 5. Widened and thickened handle design, comfortable and durable 6. Two way zipper, more convenient to open and close 7. Side handle design, a variety of carrying methods 8.

conference room audio system

and the transmission speed is fast

DC interface

the distance is longer

reasonable storage

With the mute function

personalized and fashionable

Loading Container 20GP: 438 cartons * 4 pcs = 1752 pcs

The angle between the mirror and bracket is adjustable

Using coaxial two units

Output Interface: USB-A 3

and any earphone can be connected separately when taken out