2.4 GHz wireless connection with a range of 10 meters: use AES-128 encryption to offer greater safety: this mouse uses a small USB receptor that can remain connected to the computer without obstructing other ports The laser sensor works in most Surfaces, including glass : Het ergonomische profiel past perfect in de handpalm van de hand en garandeert comfortabel gebruik compatibel met Windows 7, 8 en 10: gebruik 1 AA -batterij (inbegrepen): Elegante zwarte kleur