The AR Acoustic Research AW871 Wireless Stereo Speakers with Transmitter offer a vintage audio experience with modern convenience. Made by Acoustic Research, a reputable brand known for high-quality audio equipment, the AW871 speakers provide a wireless option for listening to music in stereo. With the 900Mhz transmitter included, users can enjoy their favorite tunes without the hassle of cords or cables. These speakers, manufactured in China, combine classic design with wireless technology for a unique audio experience for vintage audio enthusiasts. When using the power adapters for the speakers you must remove standard non-rechargeable batteries. The power adapters also recharge nickel metal hydride batteries which are not included. North American addresses only. Thanks for looking and good luck!