P-M1001 = Multifunction (3+1) pen, 1.0mm red black ballpoint pen + 0.5mm mechanical pencil + highlighter. Practical function pen. Colorful plastic barrel, soft rubber grip. Available in six colors.
4 in 1 : Blue ballpoint, fluorescent, PDA, 0.5mm pencil. Satin chrome upper barrel, Metal barrel with artificial leather. Shiny chrome parts. The exact price and specifications may vary.