Cube Bracket Set met Transmitter Race Black-serie

Why i have to say about this sensor? First, i has to bout already cyclocomputer Race peak, but no from here. I choosed him by functions, altitude, usable for a two bikes. I has directly some problems with him - he dasn´t work, as was in describtion, battery from CUBE was empty, new ones need couple of days, for working start up almost correctly /almost, no definitely/. Seler /bikester/ don´t answer me for any question. Any way, main functions work correctly, and is enough accurate. Because i no have enough money just for trial any others cyclocomputer /waste money for nothing/, i choosed no buy some other computer for my second bike, but just this sensor, if i can use one computer for two bikes. 20€ for sensor is still 2-3 times less, than new computer with similar functions. I thought, that with sensor can´t be any problem. They come with new packaging, look unopened. But i was surprised, WHY battery is inside him, without any insulating film?! If this sensor was never opened, battery was puted inside couple of years ago, in the china´s manufacture. Result? Of course, battery was empty. OK, again i have to buy a new one. I thought, from now everything will be OK, finaly. But no. After two weeks, he still any time /indipendent/ alert empty sensor battery. I has already removed this battery, put inside a other new one, but nothing changed. Now i don´t know - sensor also need couple of days/weeks for start up? Or CUBE make joke with me, customer /s/? Ar this product is definitely just joke? He work sometime realy great, perfect, accurate, and sometime no body can know, whant he doing, will do next minutes. By this things, i can´t recommend him, because no body can know, what he will get. Futureshop - yes, have to make clearence with this product.