Micromax has unveiled two new low-cost devices, targeting consumers looking for affordable devices as back-ups to their smartphones. The first device, Joy X-1800, is priced at Rs 699 and has a 1.76 inch screen, 0.08MP camera, 750 mAh battery and expandable memory up to 4GB. Joy X-1850 with same features but with 1,800 mAh battery is priced at Rs 749.