Custom printed iPhone megaphone speakers will outstretch your promotional audibility without magic bricks or batteries! These megaphone speakers are made of silicone and are inspired with same technology as old-timey horns and megaphones. These colorful promotional speakers can amplify sound by up to 15 dbs (that is around 2-3 times louder than the sound produced by the mouth without a speaker). These iPhone megaphone speakers can hold your phone vertically and features a charger opening. If your recipients want to enjoy great background music or video watching, these personalized bullhorn speakers are just for them. These logo printed electronic accessories are ideal promotional gifts for marketers in entertainment, media and technology related niches. Request a quote to know wholesale savings for these promotional iPhone megaphone speakers