Displayed here is a portable speaker made of acrylic and ABS.  It outperforms the rest with high fidelity.  This portable speaker is lightweight, durable and user-friendly.

• Material: acrylic, ABS.
• Rate power: 3W x 2.
• Frequency range: 90Hz to 20kHz.
• Input voltage: 5V, DC.
• Impedance: 4ohm.
• Frequency response: 50/60Hz.
• Power supply: 800mA lithium-ion battery (Nokia).