Delux M618Plus Ergonomic Vertical Wirele Mouse 800/1200/1600 DPI 6 Function Buttons Optical Mice with Removable Palm Rest Features: Ergonomic design, no worry about fatigue with removable palm rest, giving your comfortable feeling Wirele version, with USB interface Compatible with Windows XP, Vista, 7, 8, 10, Linux Skid resistant and sweat resistantmore convenience for you Fit for Notebook, PC, Laptop, Computer, Macbook and other device Remark: Compared with traditional mouse, you may need a week or so to get accustomed to using Ergonomic vertical mouse! Specifications: Item: M618PLUS Version: wirele Button: 6 (Left click, Right click, Scroll wheel, Forward, Backward, DPI button) Resolution:800/1000/1600 DPI Polling rate: 125Hz Working Voltage: 5V Working current: 16mA Connection: USB Receiver Battery: 1*AA Battery (Not included) Mouse Wight(without packaging): 210+/-10g Mouse Dimension: 148.85(L)*94.82(W)*98.93(H)mm System: Windows XP, Vista, 7, 8, 10,Linux. Box contains: 1 x M618Plus Wirele mouse 1 x user manual Vertical Mouse Evolutionary Milestones Ergonomic Design Volute Bionic Shape Unique vertical mouse with special volute bionic design, alleviates the arm discomfort and stiff feeling, let you say goodbye to "mouse hand" . Show your personality Different shape but with same button function for M618 PLUS Removable Palm Rest Rubber palm rest, anti-slip anti-sweat, more comfortable Health-oriented Excellent stability, cool light efficiency. Mouse Dimension Details of Button Function