Doctor Who Star Wars Soundblaster Voice Keychain With Original Movie Sounds featuring YODA Enjoy infamous sound effects Secret sound revealed by pressing a combination of buttons About 2.5 x 2 inches Sounds Yoda: When 900 Years Old You Reach Look as Good You Will Not, Hmm?, R2-D2 whistling, Darth Vader breathing and the legendary Light saber battle. Find the secret sound by pressing a combination of the two correct buttons!.