Smartwatch
It is one of the newest and advance invention of the modern time.smartwatch means making watch advance.thorough using mobile in watch.smartwatch is very small.you can wear it in your hand.it is just look same like watch.but there is a phone inside it.
Smartphone helps us a lot.you can call thorough it,you can hear songs thorough it,you can call through it etc.you can do everything thorough a smart phone.