Mini S - Standalone GPS Based Performance Meter Box 25Hz - Car and Motorcycle Lap Timer and Drag Meter with Mobile App - Vehicle Racing Timing System

Typically, to have something like this costs thousands of $$$ but somehow Racebox managed to squeeze an incredible amount of tech into a small, very affordable device that's about the size of a JBL clip speaker (3x3x1 inches roughly). It has extremely accurate GPS (down to about a foot) and an accelerometer that updates much more than the usual once per second that pretty much any phone or camera like a gopro or insta360 captures, which means clean telemetry data for all your track day videos that nobody watches but your mom. It has a good battery which should last a whole day at the track and hours worth of space for recording. The app works very well and is fairly easy to use. It has hundreds if not thousands of tracks and layouts pre-programmed in the unit and it somehow also records weather conditions and timestamps on all your recordings. I could write a review 10x as long on all of its features but just do yourself a favor and buy one already. Lastly, for motorcycles they recommend placement on the tail but this was where I mount my insta360 sometimes, I instead placed it on the fuel tank under my chest when tucked. I thought this might impede the gps reception but it had zero effect. The device was getting down to 1 meter accuracy inside my house! So if you're outside, expect it to be around 10-12 inches regardless of placement. (For comparison, most phones barely get within 15ft, but can at times be hundreds of feet inaccurate).

I love the RaceBox Mini on my track bike! When a transponder is not available at the track this little gem provides all that I need. It's easy to transfer between bikes (or cars), stays where you put it, and only requires a phone. It took a couple of times contacting customer service to get it to work for me without carrying my phone with me, but customer service was fantastic and provided me with videos to surmount my problems. The device recognizes every track I have been to including Kart tracks and is very accurate when compared to a high quality transponder. I have charged the device after every track day and was surprised to learn that I could probably do three track days in a row without charging. The price is right for what you get and it's wonderful not to have to connect any cables to my bike (or car)! If you need a readout while riding/driving, this device is not for you.

Just got the mini S last week and used it on the track yesterday. I got lucky as Racebox has just rolled out the video overlay feature for all users! I cant express how great this is, as I won't need to buy or use another app to add overlay to my data/video.You can record data in 2 ways, live on the phone or in "standalone" mode. Only issue with live on the phone is, if you turn phone screen off it stops recording. It is meant to record while you use phone as display for the gps. Standalone records with phone off (after you start it on the phone).For overlays it lets you add videos from external cameras (in my case it was video from Akaso Brave 4). It even lets you join those videos if the camera saved in more than 1 file. The trick is to then go into the lap time and adjust the video to sync perfectly. Not super intuitive but it works...

I've used it for rental kart championship to get telemetry, works as expected, fits in a pocket - awesom piece of engineering here.

Works awesome. Sticks great to the roof of my race car. Times are within .13 second of official timing!!! Connects quickly at the track. Easy to use app.

Great product, terrible app.

Excellent addition to anything that has some power behind it.I use this for my electric skateboard & it has definitely helped improve track understanding / helped push me harder to shave off time on my best runs.You can see the module is placed on top of the board(Most riders do the same)

Not sure who designed the unit without a physical reset button.The units froze on me during stand alone session. Never was able to restart until battery is fully drained.Seems like no firmware or any other update can be done, so you might lose a weekend of data randomly. Very annoying.