Could of been 5 Stars I have found the hammerhead Karoo 2 once you know how to use it after my garmin 520 an excellent bike computer. The mapping is outstanding and the data you can have on the screen is also very good. Its easy to use and you don’t need to change the mount from your garmin mount as an attachment comes in the box. The display is very clear and easy to follow. BUT I can’t give five stars as the battery life is very poor if you have a number of sensor going at the same time as the mapping. After a 2.30 hour ride I was down to 65% battery life. Come the summer am hoping this will last the 100+ miles a ride. I do think hammerhead need to look at this very quickly to compete with the likes of garmin. HOWEVER saying that I would recommend this bike computer as I am more than happy with it.

Fed up with workarounds The unit has multiple shortcomings but I guess these may be different for what you are using it for. I test the basics against an old but super reliable and functional Lezyne Mega C. It sends a live tracking email - Karoo can’t. You have to text a weblink. Lezyne permits a cadence (only) Bluetooth link but Karoo can’t - it takes speed and distance bundled with cadence and then conflicts with its own speed and distance measures - so speed and distance stop at random intervals and gives erroneous data. Lezyne displays a simple clear graphic of the SRAM shifter position. Karoo displays numbers… Lezyne is inexpensive and ‘just works’ Karoo 2 is expensive and needs constant tinkering or workarounds for you to try to justify the costs. Unfortunately I was well through my 45 days when I acquired my new modern ebike with lots of Bluetooth and Ant+ sensors. I have to unpair these to get any sense from Karoo 2. Am just wearied with it…

Poor The fact that the 5 star reviews all seem to be customer service related doesn't bode well. Trip computers don't need customer service. I have a Karoo 2. It's badly thought through and is forever scuppering my attempt to record rides. It's real "emperor's new clothes" territory. Avoid.

Never arrived, logistics nightmare I was not able to test the device as never arrived. Their logistic is a disaster. They sent a message that the device was sent and then they tell they cannot deliver, with any explanation. So I sit and wait for a parcel that never arrives. Sort out your logistics use a company like Amazon that knows how to ship goods.

I am a very happy Karoo 2 user I am a very happy Karoo 2 user, for one year. I had some questions, got quick and qualified answers, so I bought Karoo 2. For me, the Karoo 2 was, by far, my best buy the last couple last years. I have used several other cycling computers, but no one matches the Karoo