Buy the Nexus 6, Nexus 9 or Android Wear device and score $50 of Google Play credit
Want to know how this works? Here we go. From now to March 31st, buy one of the devices mentioned above and you will receive an email with a Promo code good for $50 in Google Play credit. The email will arrive once your new device ships. Use it to purchase movies, music or games. How you use the $50 is totally up to you, just as long as you realize that the credit won't work for purchasing gadgets in the new Google Store.
Speaking of Android Wear, Google is selling the Sony SmartWatch3 at a $50 discount which brings the price down to $199.99. Buy the watch and you are also eligible for the $50 in Google Play credit.
Besides the Sony SmartWatch3, the other Android Wear smartwatches being offered by Google include the Asus ZenWatch, Motorola Moto 360, LG G Watch R, LG G Watch and the Samsung Gear Live.
source: Google via AndroidAuthority