In terms of parameters and performance, A 109K still maintains the same level as A 109. A 109K adopts WOLFSON (European Sound) independent music decoding chip and Yamaha professional music amplifier, and has no clip-proof technology, PAD(PureAudioDesign) voiceless technology and conch-type cavity speaker, which makes music play more outstanding. A 109 is also equipped with 2.4-inch IPS technology to highlight the QVGA resolution LCD screen. Because of the polysilicon material, the video (MP4/3GP) is softer and more delicate. Equipped with a 2 megapixel camera, it supports video shooting and playback.

Other functions, OPPOA 109K are also well considered. In addition to Bluetooth data transmission, blue stereo headphones, web browsing, intelligent dialing, English learning, short message sorting and other functions, it also retains the well-received Chinese pen input method.

A 109K not only retains the classic Roland violet of OPPO A 109, but also introduces the color scheme of lilac purple for users with different preferences to buy slim and light figure, which has always been the goal pursued by fashionable women. The mobile phone tailored for women should also pursue slim figure. With its beautiful appearance and excellent sound quality, OPPOA/KOOC-0/09 music mobile phone officially launched its "slimming" upgraded version A/KOOC-0/09K. Compared with the original, the fuselage thickness of A 109K is only 14.2mm, and the fuselage is thinner, so it looks more attractive as a whole.