It’s an old Touch. I only use it on long flights, so it is rarely turned on. My usual device is the Fire.
Looks like the Touch should be on version 5.3.7.3
Determine current version:
http://www.amazon.com/gp/help/customer/display.html?nodeId=201177320
Kindle Touch version info.:
http://www.amazon.com/gp/help/customer/display.html/ref=hp_200529680_touchupdate?nodeId=200790650
Devices covered by the March 22 WiFi version update:
http://www.amazon.com/gp/help/customer/display.html?nodeId=201994710