● 8.5 inches - red - black - white - blue - LCD tablet

● Pressure drop (g) 100-200

● Battery type: CR2016

● Film hardness: H ≥ 3

  ● writing times: 10 million ≥ times

● Font color: yellow-green

● Membrane treatment: anti-vertigo

● Reflectivity 25% -% 30

● 3.0V lithium manganese battery

● Storage temperature 10 ° -50 °

● Operating temperature 0 ° -40 °