Angel Ramirez Caballero,who is  Mexico National coach , like Hero X10 bow very much. see Angel's feedback after testing by himself as following:

1. The current test results are very good, will be further tested;

2. Fisted 140 arrows, 4 times out of sync. Synchronization is achieved through 4 substring adjustments; it is a common phenomenon for new bows to come and go; such materials should be better for bowstring materials. By increasing the number of turns of the secondary string, the synchronization is finally achieved.

3. The fault tolerance of HERO X10 is very good. When the cams are not synchronized, they can still hit the center very well.