Chinese smartphone maker Vivo has fulfilled its promise of launching its X5 Max handset, the slimmest smartphone in the world.

Measuring at 4.75 mm, as rumors claimed, the X5 Max takes the title of the world's slimmest smartphone from the Oppo RF phone, which measures 4.85 mm, according to Android Headlines. Features of the new phone include a 5.5-inch 1080p Super AMOLED display, 16GB of expandable storage, 2GB of RAM and a 2000mAh battery.

Qualcomm's Snapdragon 615 SoC processor is included to power the device, and an Adreno 405 GPU provides the graphics processing.

The Snapdragon chipset comes with a 1.7 GHz quad-core Cortex-A53 and 1.0 GHz quad-core Cortex-A53 64-bit CPU, GSMArena.com reported.

The front screen features dual SIM slots- one for a microSIM and another for nanoSIM cards. The phone also runs on Android 4.4 software, which comes with the company's FunTouch 2.0 UI.

The back of the X5 Max includes a 1.3-megapixel camera, which features a Sony IMX214 sensor and an LED flash.

Vivo will make its slim X5 Max smartphone available to customers starting Dec. 22 for 2,998 Yuan ($485).