 It has a 32-bit ARM7TDMI-core Atmel AT91SAM7S256 microcontroller with 256 KB of FLASH memory and 64 KB of RAM, plus an 8-bit Atmel AVR ATmega48 microcontroller, and bluetooth support.It also has a speaker and can play sound files at sampling rates up to 8 kHz.Power is supplied by 6 AA (1.5 V each) batteries in the consumer version of the kit and by a Li-Ion rechargeable battery and charger in the educational version.