Positives:
The pen is well made and fits comfortably in your hand. Precise writing is only possible when the pen via Bluetooth is coupled to the app and the iPad.
Negatives:
The pen has no clip, which means that he quickly rolls away times when you have placed it. Before writing you have to turn it on and wait for about 1 sec., The power button is hard to see and hard to feel. To use it for some time, he does not shut down and you have to seek the power button again. Sometimes he loses the Bluetooth connection and you have to re-pair it. The writing feel is very "hard" and "noisy" although the tip is slightly feathered, similar like writing with a pen on the iPad touchscreen.
Due to the many negative (for me) points I have the pen returned. Property me a Wacom Bamboo CS-160 gained. This has, however, although a very large tip when used in Good Notes to write the Zoom window is not a problem.