1.38 inch round TFT 1) emitting light, pure & bright, vivid color;2) much brighter than LCD, good readable under sunshine ... 4) so fast response time(µs),1/1000 of LCD response time;5) lower power consumption than LCM ... broad range of temperature( from -40°C to+80°C);7) thin & light, solid structure against vibration ; Application: much ... industial meters , military application etc.. 1.38inch round TFT