Good wiring
The wireless code watch is a little slower than the wired code watch reaction, the front wheel 3 laps of the general wired code watch will have a reaction, and the wireless code watch generally needs to turn 5 to 6 laps to have a reaction, the accuracy of the two is no difference. The good of the code watch is better than the price, the quality of the product has a great relationship, and the accuracy of the more expensive code watch will naturally be correspondingly higher. However, this is only a relative term, and then high-end stopwatch can not be 100% accurate.