Lenovo B515 15.6-inch Everyday Notebook Backpack Grey GX40Q75217 Brand_Rocka A built-in chemical sensor is

A built-in chemical sensor is responsive to low concentrations and can accurately detect the CO level straight up to 10 years

Battery form factor: Button/coin

ensuring efficient data handling

Full HD videos

Fan Speed Control Range: 60 ~ 100%

Lenovo B515 15.6-inch Everyday Notebook Backpack Grey GX40Q75217 Brand_Rocka A built-in chemical sensor isLenovo B515 15. 6 inch Everyday Notebook Backpack Grey GX40Q75217 Made from high quality water repellent and tear resistant materials, the Lenovo 15. 6" Laptop Everyday Backpack B515 is built for the daily grind. It fits up to 15. 6" laptops with a main compartment that is spacious enough to carry personal belongings for the gym, a business trip, or everyday life. It also features a quick access pocket and two side pockets for additional storage