$7.75 (as of 28/08/2018 23:39 PDT details )
Features:
- 2PC 2.75 inch speaker passive radiator auxiliary bass
- Working principle Speaker at work up and down vibration, vibration will produce air flow, bass film by the flow of air led to produce low frequency.
- Note This is not a speaker, it is only for Enhance Bass, Without Wiring!