"UNIT DIMENSIONS ARE 6.1X11.4X3.3CM;DISPLAY SIZE,WXH IS 3.8X6.3CM;DISPLAY TYPE IS TRANSREFLECTIVE COLOR TFT TOUCHSCREEN;BATTERY USE IS (2)AA BATTERIES;NIMH OR LITHIUM ARE RECOMMENDED AND RECHARGEABLE NIMH PACK IS OPTIONAL;UNIT IS WATERPROOF BUT DOES NOT FLOAT;UNIT CAN ACCOMODATE MICROSD CARD FOR MEMORY"