Which motion gesture can wake-up Samsung Galaxy Gear(SM-V700)?

Once your Samsung Galaxy Gear goes to sleep, you can turn it back on or wake up the device by pressing the Power/Home key, located on the side of the device. 
 

 
In addition,

● You can use a motion gesture to wake up the device.

● Raise your arm that your Galaxy Gear is on and look at the screen for one or two seconds.

● You can also shake your arm to wake up the device.

NOTE : The device may not wake up if you are leaning back or lying down.