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 logo giving your brand lots of exposure. This mobile phone sound amplifier works for phones within the following dimensions: 3.34" wide and 0.51" thick.