... 4-wire/5-wire resistive touch screen, USB/RS232 optional; high performance, competitive price...... Our 4-wireand ... or less Mechanical Input Method: Finger, pen, or gloved hand Touch Activation Force: < 80 grams typical Surface Hardness: Scrape Hardness 3H ... 2 years standard - long term available Common Applications PDAs, Web Phone, Tablet PC, Web Pad, Mobile Warehousing, eBook, GPS etc Specifications ...