thermal printing mechanism easy paper lead compast design low noise pasteboard print and paper detect GY-2RA3 CharactersWhole set metal base, metal gear shaft, staEasier paper loadingSmall in size & light in weightble, reliable, high-life, excellent heat dissipationHigh speed:can reach to 80mm/s( motor drive voltage is 8.5VDC)Operating power range(3.5-8.5VDC)Resolution Ration(7dots/mm)Abrasion ...