Features of RVD721-BG v2: Built-in FM transmitter for wireless audio playback through vehicle stereo system. Built-in IR Transmitter for IR Compatible Stereo Headphones (Sold Separately). Internal Stereo Speakers for low level listening. 3.5mm Headphone Jack. RCA Line A/V Signal Output. SONY Laser Lens. Japanese Mabuchi Loader and motor. Pre-Installed Adjustable Metal Poles (4in - 7in). Metal Inserts for Monitor Support. Plastic Inserts for Custom Fit to Most Vehicles. Forward/Backwards Tilting Headrest. On Screen Display Menu In English, Spanish, French, Russian, Chinese, Italian, Portuguese, German, Dutch. Multifunction Remote Control Included. 32 Bit Game System built in with included game controller and game disc. (Over 1000 total games built in). Dimensions (HxWxD) 7.7" x 11.2" x 5.9". Height with poles 13.8"

Specifications of RFH3: A Frequency range 17-23,000 Hz. A Channel, IR_OUT_L:2.8 MHz. A Channel, IR_OUT_R:2.3MHz. B Channel, IR_OUT_L:3.8 MHz. B Channel, IR_OUT_R:3.8 MHz. B Channel, IR_OUT_R:3.2MHz. Sensitivity 96 dB. Modulation high frequency. Power supply 2X1.5V. Battery R03 (AAA) 48h (Batteries not included). Weight 160 gr. (excl. batteries).