You can add your own games via a Micro SD card. Over ten systems from classic handhelds to home consoles are supported with the custom firmware and more are being added regularly. The MiYoo is very portable at just 12.3cm x5.6cm x 1.4cm (much smaller than Revo k101), it is ideal for a quick pick up and plays. And with save support, you can continue at any time even if the original game did not support it.
Play your favorite retro gaming classics on one portable handheld
High quality 2.4" IPS Display Screen (tempered glass)
Supports save states, save then continue where you left off at any time
Add your own games via Micro SD card.
Upgrade to custom firmware to add even more classic gaming systems
PocketGo- Featured on RetroDodo
Features:
L, R buttons, the volume dial
Loads games from MicroSD card (no games preloaded)
Supports game types: NES/GB/GBC/GBA/SNES/SMD/SMS/PCE/NEOGEO/ MAME/ PS1
Save/Load game progress

Specs:
CPU: Allwinner F1C100S

RAM: 32MB

Screen: 2.4" IPS 320x240 (tempered glass)

SDCard: supported up to 128GB

Buttons: L, R, the volume dial, switch on/ off, Reset

Port: TV- out, Headphone Jack, Micro SD card slot

Battery: 1000mAh

Dimensions: 12.3cm x5.6cm x 1.4cm
Weight: 100G

Includes:
Retro Game Handheld Grey Color-MiYoo
USB cable
User manual
Micro SD card