This is the easiest model, but even it has 14 functions in its functionality: hushed: - distance traveled, speed, average speed, hours, setting the radius of the wheel, etc.
The order comes in the original packaging with instructions in English.
The sensor is a reed switch in a sealed plastic case, which is triggered when a magnet approaches it, which is mounted on one of the spokes of the front wheel of a bicycle. The magnet is fixed, frankly, not very reliable, so when driving on impassable roads or tall grass, it can easily turn over and the speedometer will stop working.
Also, the magnet should be very close (preferably not more than 5 mm) from the reed switch.
The speedometer itself is attached to a special holder, which in turn is attached to the handlebars of the bicycle on double-sided tape and optionally on plastic clamps (included). The speedometer can be easily removed from the holder, but at the same time, it holds securely in it.
The bike speedometer is waterproof so it can be left in the rain.
I would also like to note that the LCD display of the speedometer is clearly visible in the sun, and also consumes very little. One AG13 battery (yes, the speedometer runs on a single 1.5 volt battery, just like a calculator) lasts about a year and a half.
Setting up this unit on video:
Cost: ~ 273