★Features:

◇ERGONOMIC DESIGN - Unique ergonomic design with removable palm rest to reduce hand and wrist pain;

◇TWO THUMB BUTTONS - Two thumb buttons can be used for back/forward browser navigation;

◇DRIVER FREE - Driver free 3-mode DPI shift:600/1000/1600DPI adjustable;

◇HIGH RESOLUTION - High-resolution optical sensor with adjustable sensitivity for accuracy and responsiveness;

◇SCROLL WHEEL - Scroll Wheel lifetime: 200,000 circles/ Button lifetime:3 million times;

◇WONDERFUL GIFT - for friends / colleagues / family and yourself.