Phone Speaker Amplifier made of renewable bamboo wood and a transparent acrylic panel enables you to share your music through passive sound amplification. This bamboo amplifier and phone stand can naturally amplify sound by 10 decibels. Fully customize this eco-friendly product with a laser etched logo or full color printed logo giving your brand lots of exposure. This mobile phone sound amplifier works for phones within 3.34" wide and 0.51"  thick. It's compatible with most iPhones, Galaxy and other Android phones within the suitable size.