Greetings!
The first Android tablet I own, was the Sero 7 Pro from Hisense. It was a Walmart exclusive for $129, and ran Android 4.2.1 Jellybean for it’s lifespan. It was a competitor to the Nexus 7 2013.
My first ever Android phone, was the BLU (Bold Like Us) Life One X 2016. It was $99.00, and ran Android 5.1.1 Lollipop for its lifespan.
Both devices let you activate Talkback via the Two-Finger-Hold method, on the power screen.