BANGE Travel Backpack Men Business Backpack School Expandable USB Bag Large Capacity 17.3 Laptop Waterproof Fashion Backpack 07APR There has three versions--Pro-10/Pro-30/Pro-50 with

There has three versions--Pro-10/Pro-30/Pro-50 with hi-res audio

MODE 2: Always On Mode

Width[mm]: 11

Intelligent Charge: No

Brightness: 10000 Lumens

BANGE Travel Backpack Men Business Backpack School Expandable USB Bag Large Capacity 17.3 Laptop Waterproof Fashion Backpack 07APR There has three versions--Pro-10/Pro-30/Pro-50 withSPECIFICATIONS Brand Name: Bange Origin: Mainland China CN: Guangdong Main Material: Oxford Lining Material: POLYESTER Hign concerned Chemical: None Backpacks Type: Softback Interior: Interior Slot Pocket Interior: Cell Phone Pocket Interior: Interior Zipper Pocket Interior: Interior Key Chain Holder Interior: Interior Compartment Interior: Computer Interlayer Handle Strap Type: soft handle Exterior: Silt Pocket Decoration: none Closure Type: zipper