- Supports a relaxed, neutral hand and wrist position - Precision grip for accurate cursor control - Button to switch between right-handed and left-handed use - Universal: Suitable for both larger and smaller hands - Easy to use with familiar pen grip, 4 dpi settings - Simple charging via USB - Mobile: Compact and lightweight System requirements: Windows XP / Vista / 7 / 8; OS X 10.5 < BakkerElkhuizen guarantees the longevity of its products. Register your product before the basic warranty expires on the manufacturer's website using the registration code or the EAN number on your product for an extended warranty of up to 5 years on electronics or even longer warranties on non-electronic products! * Extended warranties apply to all non-electronic products with the exception of all gas spring parts, which are covered by a 5-year manufacturer warranty.