MCM | Bags | Mcm X Wizpak Cognac Brown Backpack Limited 。Material: Coated canvas Measurements in inch (approx): 9 4/8\"L x 13\"H x 4 4/8\"D Features MCM x Wizpak celebrates 45 years of hip-hop’s influence through our Visetos backpack built with a luxury sound system. The 3D surround technology lets you fill any room with your favorite song. Plug your device into the side of the coated canvas body or connect via Bluetooth for wireless mobility. 12.8 x 10.4 x 4.9 inches Adjustable shoulder straps 40W 2.1 stereo speaker system with 3D surround technology Wireless Bluetooth connection Up to 14 hours playback Rechargeable battery Gold-tone hardware Interior pocket for small devices System remote control and power button located in shoulder straps SOS panic button at shoulder straps Micro USB charging ports Comes with dust bag