<b>Specification:</b><br><br> 1. Dimensions：about 4.84*2.48*3.03 in/123*63*77mm.<br><br> 2.Net Weight: about 4.87 oz/138g. <br><br> 3.Mouse type: Wired LEFT-HAND Mouse. <br><br> 4. High Resolution: 800/1200/1600 DPI adjustment.<br><br> 5. Button:Left/right Button+Forward/Back Button + 1 Scroll Wheel +DPI Button.<br><br> 6. Effective: 2.4GHz wireless transmission up to10 meters operating distance.<br><br> 7.Compatible with Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, Mac OS, Windows ME, Windows 8.<br><br> <b>Features:</b><br><br> 1.Compared with the traditional mouse, the vertical mouse fits your palm and keeps your hand and arm in a more comfortable position.<br><br> 2.A good choice for people who work with the PC for a long time.This mouse will make you comfortable, keep you away from fatigue and the mouse hand.<br><br> 3.Recommended for：office staff,stock operator,white collar workers,a person with tenosynovitis,engineering designer and developer.<br><br> 4.Adjustable DPI:It allows you change the sensitivity of the mouse’s pointer speed (800 /1200/1600).<br><br> 5.You can make it slower for things that require precision like color correcting and photo edits or make it faster for browsing.<br><br> 6.Advanced “Forward Button“and“Backward Button“functional buttons provide convenience when you browse web page. It will help you be more efficient.<br><br> 7.Plug and play:Do not need to install any drivers, plug in to use, very convenient.<br><br> 8.Note:For Mac series, Forward / Backward Button cannot be used.<br><br> <b>Package included: </b><br><br> 1 * Wired vertical mouse<br><br>