USB Finger Trackball Mouse

This is a portable finger hand-held 4D Usb mini trackball mouse with off-table design for free and comfortable operation. It is ideal for laptop users. Descriptions: It can be operated in various ways to ensure long-term use without harm to wrist or muscle No limitation of operational space Avoid sitting closely to the monitor and reduce the harm of radiation and eye fatigue Plug and play ,no software required Fits left and right handed users Compatible with Windows95/...

4D space mouse. No table top required. Never hunt for "mouse space" again! Use this newly invented alternative to standard mice or trackballs instead. The ergonomic design of this 3-button finger mouse/trackball combination is ideal for home, office, or the mobile traveler. A perfect "hands free" computer control device for multimedia presentations!

* Support: SD, MMC, RS-MMC, Mini SD, T-Flash, M2 ETC. * 1.SD Series----- Secure Digital card(SD), Multi-Media card(MMC). * 2.Mini Secure Digital card (need adapter), Multi-Media Plus card, Multi-Media Turbo card, RS Multi-Media card, RS Multi-Media Mobile card, RS Multi-Media Turbo card. * 3.TF Series----- Micro SD,TF. 4.MS Series----- Memory Stick(MS), Memory Stick Pro, Memory Stick DUO. 5.M2 Series----- M2.