After owning the Go-Tcha for a week I have discovered the devices biggest weakness, it is way too tiny. That coupled with the terrible rubber that the device sits in makes it very easy to lose. In fact, I lost mine. One second it was on my wrist, the next the Go-Tcha was nowhere to be found. The device could benefit from a higher quality wrist strap, something that will make your $40 dollar investment safe.