Dual-Speaker phone case

The volume will be enhanced and be conducted to the bilateral sides of the back with exclusive sound-conduction design. No external wires and batteries needed, you can still enjoy Dual-Speaker stereo effect! When intall phone case on,the volume can be improved from 5 to 20 dB according to the different audio. The protective case, not only to protect your beloved phone, but also increase the volume. Size: 70X145X10(mm)/80X165X13(mm) Material: TPU、PP、EVA FOAM Applicable Models: iPhone6、6s / iPhone 6 Plus、6s Plus