Battery Distributors carries a full line of APX 4000 Li Radio Surveillance Equipment & Earpieces, OEM Brand APX 4000 Li Radio Surveillance Kits, Motorola APX 4000 Li Radio Earpieces, APX 4000 Li RADIO 2 wire surveillance kits, APX 4000 Li RADIO 3 wire surveillance kits, APX 4000 Li RADIO Bluetooth Surveillance Kits, APX 4000 Li RADIO Listen Only Earpieces, APX 4000 Li RADIO 1 wire surveillance kits