Unfortunately the memory of the Ricatech RPF-15 cannot be extended by external memory cards. At the internal memory there’s enough space for over more than 100 photos. Transferring photos and charging the battery can be both done via USB. Ricatech RPF-15:

Specifications Display: 1.5 inch LCD

Resolution: 128x128 pixels

Constast/Backlight: Adjustable

Internal memory: 107 photos

Software: only for Windows XP/Vista

Fileformats: JPEG, BMP

Slideshow: adjustable speed 1-15 seconds

Autosleep: adjustable 1-30 minuts

Colors: Black, white

Battery: Lithium-ion rechargeable battery