Oppo K9s mobile was launched on 20th October 2021. The phone comes with a 6.59-inch touchscreen display with a resolution of 1080x2412 pixels at a pixel density of 401 pixels per inch (ppi).Oppo K9s comes with 6GB of RAM. The Oppo K9s runs Android 11 and is powered by a 4880mAh battery.

As far as the cameras are concerned, the Oppo K9s on the rear packs a triple camera setup featuring a 64-megapixel primary camera with an f/1.7 aperture; an 8-megapixel camera with an f/2.2 aperture, and a 2-megapixel camera with an f/2.4 aperture. It has a single front camera setup for selfies, featuring a 16-megapixel sensor with an f/2.0 aperture.

The Oppo K9s runs ColorOS 11.2 is based on Android 11 and packs 128GB of inbuilt storage that can be expanded via microSD card. The Oppo K9s is a dual-SIM mobile that accepts Nano-SIM and Nano-SIM cards. The Oppo K9s measures 164.43 x 75.88 x 8.52mm (height x width x thickness) and weighs 199.00 grams. It was launched in Magic Purple Quicksand, Neon Silver Sea, and and Obsidian Warrior (translated) colours.

Connectivity options on the Oppo K9s include Wi-Fi 802.11 a/b/g/n/ac/ax, GPS, Bluetooth v5.20, USB OTG, and USB Type-C. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and fingerprint sensor.