It should have a tiny plastic tip which clicks when measure is to be made, and it is not there so measuring is highly inaccurate.
y***d (1528)- Feedback left by buyer.
Past month
Verified purchase
A+++
0***d (472)- Feedback left by buyer.
Past month
Verified purchase
Ok
1***1 (0)- Feedback left by buyer.
Past month
Verified purchase
this item and the cartridges are defective. I have loaded two cartridges with over £500 worth of peptides and both are leaking everywhere and the pen is not clicking as it should be. I’m very disappointed and would like a refund