... Touch Screen 1.Size: Mass produce 1.0'' to 22'' 2.Power:USB 3.Low cost solution,Low power consumption 7.1'' PDA, GPS 4 Wire Touch ... 1.0'' to 22''2.Power: USB 3.Low cost solution, Low power consumption4.Free warranty 1 year4 Wire Resistive Touch Screen1.Size: Mass produce 1.0 ... Dual-touch(2 points), 6 points, 8 points, 10 points, 16 points and 32 points, No ghost point. Etc 7.1'' 4 Wire Touch ...