The app also stores information about your ride, including incriminating evidence of your speed, so be careful about sharing the information.
They claim it has battery life of 30 hours and can be recharged with a USB cable.
You can also select modes to show battery life, clock, speed and other data.
The Beeline clips on in a similarly secure system to the Quad Lock and it’s small enough (20.8×51.3mm) to fit in your pocket and weighs just 60 grams.
It has a night light and they claim the display is highly visible even in bright sunlight – although it is made by Brits who wouldn’t know what bright sunshine was! There is also a backlight for night riding.