Just tried weighing it. My spring balance showed it at 2.2 kg, which is definitely not right, so I found a way of adding another 2kg to the bass - and got 4.2kg total.
Next attempt involved me standing on our digital bathroom scales without and then with the bass. The difference was 2.7kg, which could be about right. If I had to guess based on experience, I'd say around 3kg.
Anyway, for a bass it's definitely Super Light 🙂