Bought this to switch the blue ink inside with the black ink inside of my other calme (sky jade) and the blue ink in this is a brilliant blue that's almost the darkness of royal blue but still retains a shiny bright blue look. The ink flow is smooth (compared to a pilot G2 and Sharpie S-Gel) and doesn't gather on the pen nib or on the page when writing long periods. The textured rubberised grip on the bottom half of the pen is comfortable to use for long periods and allows for multiple styles of gripping the pen, the silent clicking selling point of the pen is correct as it's almost silent clicking and the sound difference is immense when you compare to pens like a Bic velocity or Pilot G2. I absolutely love the seamless design as it looks as if the pen can't be refilled when rather, it can! It has the same ink as a Pentel Vicuna incase anyone is wondering. 10/10 would recommend!
this is a great product, also bought the other variant for different use maybe one for everything that I do or work on one at home one at work and etcetera. this is a good shop will look for more products and probably order more for me and my daughters