HP Wireless CS700 (High Copy)Connector: Wireless 2.4GHzSize of keyboard: 435.4 x 141 mm Battery: AAAbatteryKnobs: 104 buttons(1200 dpi)Size of Mouse: 101x64x35mmMonitoring Technique: Optical Button Feature: 3 ButtonsBatteries: AA Batteriesa wireless keyboard and mouse set with a space-saving design ..