A Business Card Size PC
You can really do daily compute works on it.
BananaPi has 1Ghz ARM Cortex-A7 Dual-Core CPU, ARM Mali400MP2 GPU, Gigabit Ethernet, plus 1G DDR3 memory with SATA disk support.
Your Favorite Geek Toy.
Beside same GPIO and circuit layout like RPi, BananaPi has control button and TTL interface. BananaPi work perfectly with Debian. With this powerful hardware, it is easy to set up Internet service platform on it.