42 ENGINEERING, DESIGN AND TESTING OF WIRELESS TELEPHONE ACCESSORIES, NAMELY, VEHICLE POWER ADAPTORS AND RECHARGERS, POWER SUPPLIES, HEADSETS AND HEADSET ADAPTORS, MICROPHONE, SPEAKER ADAPTERS, HANDS-FREE KITS COMPRISED OF A SPEAKER, MICROPHONE, CRADLE, DATA PORT, RADIO FREQUENCY (RF) PORT, HEADSET PORT AND ANTENNA, AND EXTERNAL ANTENNA