- Smart asembly - Convenient to take with you - Eco-friendly - Make your cellphone sounds fantastic 1. This cell phone loudspeaker is made from highly grade silicone material2. No battery or power, self-powered iPhone speaker3 .Amplify your Phone with ingeniously designed,placed air tubes which will increase the volume to 10 decibels.4.It is designed as a portable physical amplifier for Iphone4/ ...