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: The ergonomic profile fits perfectly in the palm of the hand, guaranteeing comfortable use compatible with Windows 7, 8 and 10: use 1 AA battery (included): elegant red color