This is a nice quality Aiwa TS-W35U Subwoofer. It features an impedance of 8 ohms.
Frequency response 25Hz-250kHz . Reversible top gasket. Large copper-wound Kapton voice coil. Auto tension push terminals. Flat Conex spider with loop stitched tinsel leads
Motorola SNN5725 battery, Standard capacity Lithium-Ion battery is the factory original battery designed and built specifically for the Motorola ROKR/ C331t/ C332t/ C333/ C343c/ C343t/ C353/ C353t/ E1/ E310/ iTunes/ T720/ T720c/ T720g/ T720i/ T720ti/ T721/ T722i/ T730c/ T731/ V810 cell phone models.
Orion Cobalt Series 10 Inch 400-Watt Subwoofer - ORN CO104SFEATURES: Frequency response 39Hz-250kHz Reversible top gasket Large copper-wound Kapton voice coil Autotension push terminals Flat Conex spider with loop stitched tinsel leads Orion Cobalt Series 10 Inch 400-Watt Subwoofer - ORN CO104S