GTMax Bluetooth 2.0 Wireless Optical Mouse with 3-Button for Toshiba Satellite L755-S5271, Samsung Series 5 3G Chromebook, Toshiba Portege R835-P56x, HP ProBook 4530s, Acer AS5552-7474,ASUS A53U-XE1 Window Laptop netbook PC Computer Brand new generic Bluetooth 2.0 wireless optical mouse Comfort and control that goes with you wherever your laptop goes. Bluetooth Version: Bluetooth 2.0.Button quantity: 3. Scroll Wheel: 1. Tracking Method: Optical. Resolution: 800/1000/1200/1600 CPI. Surface Process: Rubber oil. Power Supply: 2 AAA Alkaline Battery (NOT INCLUDED.Power ON/OFF Switch: NO.Report Rate: 125. Range of Frequency: 2.4GHz Spectrum. Transmit Range: Up to 10 meters.Dimension (L X W X H): 82mm x 50mm x 33mm. Connection Type: A Bluetooth USB 2.0 Wireless Adapter (NOT INCLUDED).