Plastic Speaker With Keychain, No Power Supply Needed

- MP3 Speaker for CD/DVD/MP3 Player or radio
- No extra batteries needed
- Enlarge the volume without any mechanical technic
- Based on Environmentalism Concept
- Easy to use, plug and play
- Suitable for all earphones
- Trendy and creative product
- Big logo imprinting area
- Logo imprinting service available
- Ideal for promotional or gift item