About This Certified recycled content that conforms to SCS Recycled Content Standard V8-0 for a minimum 64% post-consumer recycled content of the total plastic components. (Excludes printed circuit board (PCB) assembly, 2.4GHz dongle and dry batteries) The compact USB-A nano receiver provides a reliable 2.4GHz wireless connection with government-grade AES 128-bit encryption. Windows and macOS compatible. With 6 rows of keys including a numeric keypad, the ANSI keyboard layout is ideal for the touch typist looking to maximize their productivity. A sealed membrane keyboard design ensures that any spills of water, coffee, or other liquids will not damage the electronics and can be simply wiped dry. Meets MIL-STD-810H Method 504.3 Contamination by Fluids with disinfectants with no degradation. Overview Brand : Kensington Color : Black Connectivity Technology : Radio Frequency Special Feature : Spillproof Compatible Devices : Laptop