Characteristic explanation：

• the 5W constant pressure/decides the anti- 8 ohms (double nip) 25X33X3cm
• the 10W constant pressure/decides the anti- 8 ohms (double nip) 37X47X3cm
• the 20W constant pressure/decides the anti- 8 ohms (double nip) 47X57X5cm
• the 30W constant pressure/decides the anti- 8 ohms (double nip) 57X67X5cm
• the 30W constant pressure/decides the anti- 8 ohms (double nip) 47X57X5cm
• the 80W constant pressure/decides the anti- 8 ohms (double nip) 90X120X4cm
• The above product style and the picture only supply the reference, the material object take custom make as standards