ROCK64 is a credit card size 4K60P HDR10 Media Board Computer.

• Powered via Rockchip RK3328 Quad-Core ARM Cortex A53 64-Bit Processor 
• 4GB 1600MHz LPDDR3 memory.
• Includes 5 Volt 3 Amp Power Supply

It provides eMMC module socket, MicroSD Card slot, Pi-2 Bus, Pi-P5+ Bus, USB 3.0 and many others peripheral devices interface for makers to integrate with sensors and devices.

Various Operating System (OS) are made available by open source community such as Android 8.1, Debian, Yocto and many more to come.

Enclosure available here