1 Set of DH4 include: 2 ballasts + 2 lamps + 1 user guide + 1 H4 cable + A new can-bus adaptor integrated in ballast gives 30 percent more comparability Up to 80 percent whiter light with high color 6000K . HID lighting systems have an operational lifetime that is five times longer than halogen and incandescent bulbs Vehicle Compatibility: Ambassador all models / Contessa all models / DLX Tempo Trax, Tempo Traveler, Tempo Traveler 800 / Maruti Suzuki A -Star, Ritz-Lxi, Alto, Alto 800, Alto K10, Baleno Lxi, Esteem VXI, , Zen, Estilo, 800 old model, Omni, Swift all models , Swift Dezire, Ertiga, SX 4, Versa DX Std, Wagon R, EECO, Zen Estilo, Ritz / Tata Indigo all models, DEL all models, Xeta, Nano, Safari, Sumo, Spacio, Xenon, Truck 24v / Opel Astra, Corsa, Vectra / Honda Amaze, City all models, Brio, Jazz, Jazz I-VTEC / Premier 118 Ne, Padmini / Fiat Punto, 500, Siena, Uno / Toyota Etios, Innova all models, Quallis / Hyundai Accent, Getz, i10, EON, i20, Santro, Santro Xing all models, Verna / Ford RTV, Tucson, Ecosport, Endeavor , Figo, Fusion, Ikon, Flair / Mahindra Bolero all models, Jeep all models, Armada, Marshal, Grand, Commander, Willis , Scorpio all models, Eagle, Xylo, Verito / Renault Logan / Chevrolet Cruz, Optra, Magnum, Spark, Tavera / Mitsubishi Lancer, Cedia, Montero, Parejo / Skod Offering double the lighting power of conventional halogen and incandescent lighting options, HID lamps provide brighter light and a wider visibility pattern, which reduce strain on the drivers eyes.