RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS Kensington K75233EU, RF, USB, 787.4" (20 m), Black Kensington K75233EU. Wireless receiver interface: USB, Wireless technology: RF, Frequency band: 2.4 GHz. Product color: Black, Presenter functions: Laser pointer, Remote control, Material: Acrylonitrile butadiene styrene (ABS). Battery type: AAA. Windows operating systems supported: Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10..., Mac operating systems supported: Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Compatible operating systems: macOS 10.13 or above; Windows 8.1; macOS 10.12 or above; macOS X 10.11; Windows 10; Windows 7. Width: 1.56" (39.6 mm), Depth: 1.67" (42.4 mm), Height: 4.37" (111 mm)