This device measures, as advertised, speed, time, max speed average speed etc. And from my experience is just as accurate as more expensive brand name bike computers. As mentioned in 'cons' my first item didn't work, however the second one has been in constant use for about a year and apart from needing a battery change, has not missed a beat.
Good simple bike computer. Recommend.

Great help to me while riding on a bicycle, a good buy!

Viendo la foto esperaba un tamaño menor, es para la bici de mi hijo y buscaba algo sencillo y pequeño, aunque funciona perfectamente eso no lo niego.
El envio bien empaquetado y en plazo (20 días). Correcto

funziona bene intuitivo buon acquisto

Comprei o aparelho e não consigo ajustar a hora, tenho que tirar a bateria e colocá-la quando é exatamente 12:00. O aparelho também não desliga automaticamente, ficando ligado direto!