Make hilarious fart noises with this Mini Fart Blaster Keychain from Despicable Me 3 with 2 Play Modes for optimum hilarity! Play Mode: Simply press the button for for funny fart sound effects. Joke Mode: Press the and hold the button for a few seconds to activate, then place the Mini Fart Blaster in your desired location and after about 10 seconds, it will make fart noises automatically. Requires 1 AAA battery (Battery included is for demonstration only and battery life may be impaired). Recommended for ages 4 years and up.