Japanese manufacturer Kyocera mobile model develops the size of just a few stacked business cards.

According to Verge, the Kyocera KY-O1L product is called the thinnest phone available today with a thickness of 5.3 mm and weighs 47 grams. The device is also referred to as a “card phone” due to its length (9.1 cm) and width (5.5 cm), which is equivalent to an ATM card or business card.

Kyocera KY-O1L uses e-paper touch screen.

The KY-O1L has a 2.8 inch touch screen, but uses e-paper technology, so it only displays black and white, the image transition is quite slow. It has LTE connectivity, web browser support, no camera or app store. The 380 mAh battery is quite small, but the e-paper screen is very energy efficient.

NTT Docomo will exclusively distribute Kyocera KY-O1L and claims it is “the world’s thinnest phone” by the Japanese carrier, causing controversy. Smartphone Vivo X5 Max from 2014 is only 4.75 mm thick or Oppo R5s launched in 2015 is only 4.85 mm thin. However, phones from Japan are completely thin, not protruding camera like the two above.

Kyocera KY-O1L will go on sale from November for 32,000 yen (about 6.6 million dong). Recently, the Palm brand has also returned to the market with a very compact phone that runs Android.