I have a couple of these sharpeners in different designs. They are decent, well suited for general use. Perhaps not that great for soft core coloured pencils but will do well on regular graphite.
Flip cap is sturdy and durable, shavings compartment is roomy. It’s easy to open and empty and it’s secure and won’t open on its own in your bag either.
These are my favourite cheap compact reservoir sharpeners for general use.