Portable Mini Handheld Wired Mouse

1. Off-table, for free and comfortable operation 2. Avoiding eye fatigue and radiation harm 3. Compatible with Win7/8/ME/XP/NT 4. Can be operated in various ways,avoiding harm to palm joint or muscle 5. User does not have to sit close to the monitor when using this track mouse 6. Can control the cross coordinates sensitively,simply with the thumb