For Apple Macbook Shoulder / Handheld / Messenger Computer Bag, Size: Small(Black+Black PU Power Bag) Type-iPad Air Series Parts Applicable size: laptop within 18

Applicable size: laptop within 18 inches

One-key adjustment of 800-3200DPI

Signal to noise ratio: ≧90dB

MP5 and other various small digital home appliances

Folded size: 21

For Apple Macbook Shoulder / Handheld / Messenger Computer Bag, Size: Small(Black+Black PU Power Bag) Type-iPad Air Series Parts Applicable size: laptop within 181. Soft luster, anti wrinkle and shape retention, waterproof for life, wear resistant and dirt resistant 2. Large capacity storage space, multi compartment design, can hold chargers, wallets, water bottles, laptops, etc. 3. Computer compartment: 3D airbag shockproof, effectively reducing friction in life 4. Slip pocket x 2: can place small items such as mouse and wallet 5. The main compartment: can hold books, water bottles, clothing, etc. 6. Double