This is a cool new twist on the classic bicycle bell, with a fresh design and new sound.
Bike lights have looked the same since they were invented in 1877. The Oi does away with the classic dome shape of the original in favour of a ring that sits a lot more snug on your handlebars, instead of protruding like a blister (Knog's words, not ours).
It's so discreet, you could be forgiven for not noticing it at first glance.
But it's not just the look that Knog set about changing. It came up with a new sound too. The Oi has a spring-loaded actuator built into the mount, making for a good balance and longevity of sound. This means the bell has several pitch tones. Putting it in terms usually used for a musical instrument, most bells play a single note while Oi plays a chord.
Read more: Cycling tech we want in our lives right now
It comes in five finishes: brushed aluminium, brass-plated, copper-plated, black and titanium.
It's a natty design from one of our favourite bike companies. (Though we still really like this bike horn.) It's raised $250,000AUD of a $20,000AUD goal and still has 25 days to go. Pledge $26AUD (£13) and it can be yours. It will ship in August.