4K S905X4 Hybrid Box

ARM Quad 64-bit Cortex-A55
MIMO Wi-Fi 2.4GHz / 5.0GHz
Google Assistant Built-in
Chromecast Built-in
Android TV Operator Tier UI

4K S905Y4 Hybrid Box

Quad core Cortex-A55
Android TV 10.0
Bluetooth: 5.0
Wi-Fi 2.4GHz/5.0GHz 802.11 a/b/g/n/ac
Chromecast and Google Assistant built-in

4K S905Y4 Hybrid OTT Box

ARM Quad 64-bit Cortex-A35
ARM Mali-G31 MP2 GPU
Android 11 or higher
DDR4 2GB + eMMC 8GB
Chromecast and Google Assistant built-in