Due to international logistics restrictions. The battery needs to be removed. Test the product. The product you received does not come with a battery. Guarantee the product is original Logitech, thank you.

Specification:

Brand: Logitech Model: MK275 Type: Wireless Keyboard Interface: USB Mouse Interface: USB Working Mode: Optical Photoelectric Resolution: 1000 DPI Multimedia Function Key: Yes Ergonomics: Support Waterproof: Support Keyboard Size: 440 X 140 X 30mm/17.32 X 5.51 X 1.18" Mouse: 100 X 58 X 34mm/3.94 X 2.28 X 1.34" Keyboard Weight: 480g Mouse Weight: 95g Applicable To: Home, Office, Notebook, Desktop Computer