Hi
AirPods are compatible with iPhone SE.
To use features including one-tap setup, your iPhone SE needs to be running iOS 10.x.
(The W1 chip is a hardware feature of the AirPods, not iPhone).
More information:
http://www.apple.com/shop/product/MMEF2/airpods
Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support