FLYING SAUCER (Colors May Vary) Measures 3.5" x 3.5" Flying Saucer--requires 1 3.7 V NON REPLACEABLE rechargeable battery pack (included) Infrared remote controller--Requires 3 1.5 V AG13 Button Cell batteries(included) Rapid battery charging unit--Requires 8 "AA" batteries (not included) Twin rotor propulsion, Bright diode lights & Two channel remote control