Outdoor Mountaineering Solar USB Charging Smart Backpack

1. Fabric: oxford spinning
2. Lining: polyester
3. Uses: leisure, travel, tourism, school
4. Fits to the back, relieves pressure and makes carrying easier
5. Absorb light during the day and present a fluorescent effect at night
6. Widen the shoulder strap, the length can be adjusted at will
7. Can be put into a 14-inch laptop
8. Dimensions: 48x29x17 cm
9. Weight: 0.86 kg
10. Note: Power bank is not included

Solar panels:
1. Power: 4.1-4.3W
2. Voltage: 5-10V/4A current
3. Material: monocrystalline silicon
4. Weight: 0.1 kg
5. Dimensions: 23.5x16.2 cm
6. Removable solar panels for light energy absorption
7. When the sun is full, you can charge 15-20 percent of the phone's power, and keep the phone unavailable on cloudy days