Ergonomic designed wireless mouse : ergonomic vertical design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain. it provides better support and accommodates your hand in a natural position, relieves pressure in wrist joint and reduce risk of cramping.
high-capacity rechargeable battery : built-in rechargeable battery, easily recharged through the included usb cable, no need to change the battery, very convenient! easy to use -- one nano usb receiver at the bottom of the mouse, just plug and play !
multifunction and convenient : advanced "page back" and "page forward" functionality buttons provide convenience when web page browsing. 800 /1200/1600 dpi levels -- easily adjusts the sensitivity of the mouse.