140 Large-capacity Business Commuter Laptop Backpack with USB Charging Interface(Blue) Filter-Dome Camera 40HQ: 1259 cartons * 400

40HQ: 1259 cartons * 400 pcs = 503600 pcs

Sensitivity (microphone): -17 dBV/Pa +/- 4 dB

Two-unit loudspeaker

pluggable microphone

140 Large-capacity Business Commuter Laptop Backpack with USB Charging Interface(Blue) Filter-Dome Camera 40HQ: 1259 cartons * 4001. Material: Oxford cloth, polyester 2. Function: breathable, waterproof, wear resistant, shock resistant, load reducing, anti theft 3. Accommodates computer size: 15. 6 inches 4. Using high quality fabric, waterproof and wear resistant 5. Multifunctional shoulder strap design, can hang sunglasses and storage cards 6. Design of USB charging interface on the side of the bag 7. Comfortable handle, comfortable and durable 8. Double zipper pulls, more