drvn V Series Speakers (4", Dual Cone) Communication Headphones & Accessories Adds subwoofer level controls to

Adds subwoofer level controls to any head unit

Dual alarms can be set & used independently

Toshiba(R) Satellite M305D-S4844

Dell(R) Inspiron M5030D

Includes chargers & batteries

drvn V Series Speakers (4", Dual Cone) Communication Headphones & Accessories Adds subwoofer level controls toCarbon mica cones lighter & more flexible than previous models for responsiveness to low frequency range & quality sound at high volumes; Hybrid rubber & cloth surrounds with shallower edge structure for smoother oscillation at low frequency ranges; Shallower polyetherimide tweeter diaphragms for improved response for middle frequency range reproduction; Ferrite magnets; Imp: 4ohm ; Aggressive looking grilles with wider grille ports for better